b. c. the shape of the articulating surfaces c. Not all cases of RA result in fluid accumulation, swelling, stiffness, impairment of joint movement, and extreme pain. d. pronation, Pointing the toes is an example of ________. b. Shoulder c. the body's antibodies attack the synovial membrane c. the sarcoplasmic reticulum a. are extensions of periosteum 1. A joint united by fibrocartilage tissue that usually permits a slight degree of movement is a ________. b. symphysis, sacroiliac, and articular Planar Joints Planar joints have bones with articulating surfaces that are flat or slightly curved faces. As the articular cartilage layer wears down, more pressure is placed on the bones. d. Fascia, Which term is the smallest subdivision in this group? By the end of this section, you will be able to: Describe the characteristic features for synovial jointsand give examples. c. Linkages form between the actin and myosin. b. b. b. syndesmosis In the hip region, trochanteric bursitis can occur in the bursa that overlies the greater trochanter of the femur, just below the lateral side of the hip. The femur and the humerus are able to move in both anterior-posterior and medial-lateral directions and they can also rotate around their long axis. d. Synchondroses, Which of the following is NOT strictly a part of a synovial joint? These strengthen and support the joint by anchoring the bones together and preventing their separation. Write an equation for the reaction of each antacid with hydrochloric acid. b. feet These structures can serve several functions, depending on the specific joint. What does it mean to be "double-jointed?" c. extensor D symphysis/elastic connective tissue, Which statement is NOT true of the vertebral column? D the hip joint is considered weight bearing, Which statement is NOT true of the shoulder and hip joints? c. Weakness, because not all of the ACh will find a receptor, resulting in poor nerve transmission a. tibial collateral ligament (b) Fill in this table to follow the processes: QWEintABBCCDDAABCDA\begin{array}{l}\hline The most numerous and versatile of all the body's joints are What is the sheet of connective tissue that encloses the joint cavity of synovial joints called? Chemical tests to check for changes in the fluid's chemicals. b. adductor A the backbone is flexible because many joints are present B Synovial joints are enclosed by a capsule. Pushing the foot down at the ankle joint is known as ____________________ flexion. (b) the s sublevel? Examples of this include the articular discs found at the sternoclavicular joint or between the distal ends of the radius and ulna bones. a. the origin Bursae reduce friction by separating the adjacent structures, preventing them from rubbing directly against each other. c. muscle tendons that cross the joint c. Lyme disease A they contain air The replacement head for the femur consists of a rounded ball attached to the end of a shaft that is inserted inside the diaphysis of the femur. The walls of the joint cavity are formed by the articular capsule. d. produce a smooth surface. a. Syndesmoses a. Muscles obtain their energy by metabolizing fatty acids; this is beneficial because fatty acids are plentiful c. Type sof tendons b. provides the base for bone cells to produce new bone.c.is the structure into which granulation tissue grows. In some places, an articular disc may act to strongly unite the bones of the joint to each other. b. b. hyperextension d. basidium. Synovial foints are and thus allow tor a variety of movemente. c. Hip a. a small muscle that helps with compression of the abdomen d. interphalangeal joint of the finger, In symphysis joints the articular surfaces of the bones are covered with ________. Microscopic analysis to look for crystals, bacteria, and other substances. b. the tibiofemoral joint Groups of muscle fibers D occipital, Which bone does NOT help form the orbit? (a) Fill in this table to follow the states of the gas: T(K)P(kPa)V(cm3)A293100500BC1023D\begin{array}{lccc} Ball-and-socket joints are classified functionally as multiaxial joints. True or False: Synovial fluid is a viscous material that is derived by filtration from blood. C cartilage And then you have, um, cartilaginous joint, which is ah, connected by Carlos, which is, like, hard like stuff like that and the fibres joints, which is the Senate that . True False; Mark the following statements as true (T) or false (F). Synovial fluid is present in joint cavities of freely movable joints. C body d. synchondrosis, Fibrous joints are classified as ________. The deepness of the glenoid strengthens the joint overall. How the bone ends are held together within the joint. D pivot joints are synovial joints, The regulation of the calcium content of adult bones is a function of the: The ATP triggers the actin and myosin filaments to shorten, and muscle contraction to occur. (a) the d sublevel? d. Muscles obtain their energy by breaking down ATP; this is useful because creatine phosphate is plentiful, c. Muscles obtain their energy through aerobic respiration of glucose; this is useful because it produces more ATP than anaerobic respiration, When extending the forearm B oseoblasts a. articular cartilage at bone ends is replaced with hyaline cartilage Georgia State University, Perimeter College, 2019 Electrotherapy Unit III Ultrasound Quiz.docx, 2 2 4 2 r rC r D D D 0 3 2 C r D 157 2 3 2 2 0 2 r Cr m D D A 2 2 2 2 r mr D D A, By the time Jackie Robinson left baseball 28 he had become a legend Six years, Key Factors to Consider in the Global Business Environment There are however, Lets compare this SB setup to the one in the previous chart Figure 9 1 Apart, it is said of him By thy wisdom and by thine understanding thou hast gotten thee, STAGE 1-Business Analysis and System Recommendation(Colmenares Cruz) (1).docx, Increasingly analysts label this work relational leading specifically to, CIET 151 BIT END OF 2ND SEM EXAM ONLINE.pdf, 21 MAJOR SOURCES Individuals and Small Businesses The useful span of a computer, void dfs int stack25top1 cout Deapth First Search Results cout 114 pstart while, 4. d. Periosteum, What are fascicles? During the fracture healing process, the hematoma:a.is broken down and absorbed immediately. d. the patellar ligament. Which of the following statements is true about this fluid? d. It contains lactic acid. d. cartilaginous. b. nonaxial movement; no movement D) The annular ligament surrounds the head of the radius. 8. D protects the spinal cord from mechanical injury, Two adjacent vertebrae form this type of joint: Anatomy & Physiology by Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Matern, Katie Morrison-Graham, Devon Quick & Jon Runyeon is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted. Pivot joints only allow for rotation around a single axis. d. Elbow, Osteoarthritis occurs when D synovial fluid, In a synovial joint, the synovial fluid prevents friction b. Which type of synovial joint offers the widest range of movement? D ribs/sternum, Which statement is NOT true of the shoulder and hip joints? All synovial joints have a joint cavity filled with synovial fluid that is the site at which the bones of the joint articulate with each other. A synovial membrane (or synovium) is the soft tissue found between the articular capsule (joint capsule) and the joint cavity of synovial joints. c. Incomplete tetanus A diet with excessive fructose has been implicated in raising the chances of a susceptible individual developing gout. C & 1023 & & \\ A cartilage Protection against inhaled microorganisms O D. Filters inhaled particulate matter O E. Changes blood pH by changing oxygen levels. (c)(c)(c) the fact that island species tend to most closely resemble species found on the nearest mainland Saddle joints are functionally classified as biaxial joints. B adipose tissue to store energy. The major role of ligaments at synovial joints is to help direct movement and restrict undesirable movement. Synovial joints are enclosed by a capsule. B phosphorus- becomes part of bone matrix Of all the following the one which is not a synovial joint is: c. The distal joint between the tibia and fibula. a. produce red blood cells (hemopoiesis) Since joints in the legs are subjected to greater forces, they are. B the ribs articulate with the thoracic vertebrae Cartilaginous joints allow more movement between bones than a fibrous joint but less than the highly mobile synovial joint. As forces acting on a joint increase, the body will automatically increase the overall strength of contraction of the muscles crossing that joint, thus allowing the muscle and its tendon to serve as a "dynamic ligament" to resist forces and support the joint. Correct option is C) Joints are points of contact between bones, or between bones and cartilages. C fibrous connective tissue a. hinge, saddle, and ellipsoidal Which of the following is a true statement? Which of the above statements are true 1. a. bone ends covered with fibrocartilage D both A and B, and by increasing calcium absorption, Which statement is NOT true of hormones and bone growth? There are three types of joints in the body. The greater tubercle of the humerus articulates at the coracoid process of the scapula. Which are the least mobile of all synovial joints? Which of the following statements best describes angular movements? C brain Examination of joint fluid focuses on those properties and constituents of value in determining the cause of effusions. A key structural characteristic for a synovial joint that is not seen at fibrous or cartilaginous joints is the presence of a joint cavity. C calcium, phosphorus, and protein b. sternocleidomastoid c. Tubules that allow electrical impluses to travel into the muscle cell b. bulky hip and thigh muscles surrounding the joint Treatments may include lifestyle changes, such as weight loss and low-impact exercise, and over-the-counter or prescription medications that help to alleviate the pain and inflammation. C Synovial joints contain synovial fluid. The calcium allows the myosin heads to latch on to the actin filaments and the muscle contraction occurs. A) The greater tubercle of the humerus articulates at the coracoid process of the scapula. Science Anatomy and Physiology Which one of the following is NOT a function of the respiratory system? They change (increase or decrease) the angle between two bones. They both want to have multiple children, but they are concerned about the risk of the disorder appearing in one or more of their children. D all RBCs are produced by red bone marrow, The fontanels in an infant's skull are made of: calcium carbonate. There are more than 100 different forms of arthritis. D sphenoid and occipital, The crainial bone that attaches the anterior meninges and forms part of the nasal septum is the D Calcitonin is secreted by the pituitary gland, The hormone that increases energy production from glucose only is: They allow electrical impulses to travel deep into the cell Bones are connected exclusively by ligaments. d. They occur only between bones with flat articular processes. c. the glenohumeral joint Chronic bursitis may require that fluid be drained, but additional surgery is usually not required. The immune system malfunctions and attacks healthy cells in the lining of your joints. Plane joints are formed between the small, flattened surfaces of adjacent bones. ABBCCDDAABCDAQWEint. Diarthroses are freely movable articulations. Sacs lined with synovial membranes that act as cushions between bones and other structures are called . D touch, Lenin: Consolidation of Power (1917-1918), Anatomy and Physiology Chapter 5, Chapter 5 a, David N. Shier, Jackie L. Butler, Ricki Lewis, Elizabeth Pennefather-O'Brien, Michael McKinley, Valerie O'Loughlin. The glenohumeral joint is more mobile, making it less stable. Flex . D fibroblasts, The type of bone tissue that contains red bone marrow is: What is aponeurosis? 1. Kicking a ball is an example of knee ____. a. a. Acromioclavicular joint b. Glenohumeral joint c. Scapulothoracic joint d. Sternoclavicular joint Articular cartilage. Which of the following is not a true synovial joint? b. less mobile than arm joints. A the primary center of ossification in the diaphysis c. interphalangeal (toes) Based only on their shape, plane joints can allow multiple movements, including rotationand can be functionally classified as a multiaxial joint. The bones of the joint articulate with each other within the joint cavity. Describe the structures that provide direct and indirect support for a synovial joint. . a. c. Sutures See How Arthritis Causes Joint Pain Fibrous joint. d. hyaline cartilage connecting the two bones of the joint, d. hyaline cartilage connecting the two bones of the joint, A joint held together by fibrocartilage would be classified as a __________ joint. a. A within the joint cavity At many synovial joints, additional support is provided by the muscles and their tendons that act across the joint. In individuals with more advanced osteoarthritis, the affected joints can become more painful and therefore are difficult to use effectively, resulting in increased immobility. Finally, an articular disc can serve to smooth the movements between the articulating bones, as seen at the temporomandibular joint. c. cartilaginous a. a differene in the thickness of the sarcolemma \hline Synovial joints are strengthened by the presence of ligaments, which hold the bones together and resist excessive or abnormal movements of the joint. c. The length of the muscle fiber before the contraction begins Repeated acute episodes of bursitis can result in a chronic condition. 96) _C_____ A) articular cartilage B) joint (articular) cavity C) tendon sheath D) articular (joint) capsule. Bursitis can be either acute (lasting only a few days) or chronic. These may be located outside of the articular capsule (extrinsic ligaments), incorporated or fused to the wall of the articular capsule (intrinsic ligaments), or found inside of the articular capsule (intracapsular ligaments). d. one end of a skeletal muscle to the opposite end, When a nervous impulse travels from a neuron to a muscle cell, what happens next? The walls of the joint cavity are formed by the connective tissue of the articular capsule. A synarthrosis, which is an immobile joint, serves to strongly connect bones thus protecting internal organs such as the heart or brain. At the beginning of the adiabatic expansion, the temperature is TC=750CT_{C}=750^{\circ} \mathrm{C}TC=750C. synovial membrane which part of a synovial joint cushions the ends of the bones? Bursae are classified by their location. At these joints, the rounded head of one bone (the ball) fits into the concave articulation (the socket) of the adjacent bone (see Figure 9.4.3f). d. cartilaginous joints where hyaline cartilage unites the ends of bones, d. cartilaginous joints where hyaline cartilage unites the ends of bones. b. a capsule that creates a space in the joint d. articular cartilage softens and degenerates, d. articular cartilage softens and degenerates, Which of the following correctly describes skeletal muscles? B atlas and axis c. the extracapsular ligament A second pivot joint is found at the proximal radioulnar joint. b. treppe Assume that the Porsche accelerates uniformly from 80.5km/h(50mi/h)80.5 \mathrm{~km} / \mathrm{h}(50 \mathrm{mi} / \mathrm{h})80.5km/h(50mi/h) at t=0t=0t=0 to 113km/h(70mi/h)113 \mathrm{~km} / \mathrm{h}(70 \mathrm{mi} / \mathrm{h})113km/h(70mi/h) at t=9st=9 \mathrm{~s}t=9s. Which graph in Figure 2-28 best describes the motion of the car? D protein, vitamin C, and calcium, The hormones that regulate the amount of calcium in the bones and the blood are: Both plane and ball-and-sockets joints are classified functionally as multiaxial joints. d. diarthrosis, Which of the following statements defines synchondroses? Bursae contain a lubricating fluid that serves to reduce friction between structures. A temporal a. C phosphorus and vitamin C A middle ear b. D the atlas and axis form a hinge joint to permit nodding of the head, Which of these is NOT a function of the vertebral column? b. attach tendons. C cartilage discs separate adjacent vertebrae c. synarthosis D PTH, Thyroxine contributes to the growth of bones by: a. c. plane b. c. the muscle Some joints, such as the sternoclavicular joint, have an articular disc that is attached to both bones, where it provides direct support by holding the bones together. At the hip joint, the head of the femur articulates with the acetabulum of the hip bone, and at the shoulder joint, the head of the humerus articulates with the glenoid cavity of the scapula. c. The epimysium extends past the muscle as a flat sheet of connective tissue that fuses with the covering of the other muscles. C ethmoid a. one Z line to the next Z line a. Endomysium D epiphyseal discs, Two nutrients that are needed to become part of bone matrix are: Arthritis may arise from aging, damage to the articular cartilage, autoimmune diseases, bacterial or viral infections, or unknown (probably genetic) causes. T cell acti-vation and migration occur as an early consequence of RA, and these cells adopt a proinflammatory pheno-type. b. They store the calcium ions necessary for muscle contraction This patient also had crystals that accumulated in the space next to his spinal cord, thus compressing the spinal cord and causing muscle weakness. a. cavities lined with cartilage C joint capsule a. biaxial joint; permits movement in one plane and around one axis The Tissue Level of Organization, Chapter 6. b. joints that permit angular movements The ability of the bones to move smoothly against each other within the joint cavity, and the freedom of joint movement this provides, means that each synovial joint is functionally classified as a diarthrosis. B both are ball-and-socket joints The membrane surrounding each muscle fiber b. between the vertebrae a. condylar Explain the statement, All proteins are polypeptides but not all polypeptides are proteins. d. intermediate degree of overlap of thick and thin filaments, d. intermediate degree of overlap of thick and thin filaments, Which of the following statements is correct about what happens during flexion? A mushroom that you see above the ground is actually a a. basidiospore. The only movement allowed between the first two cervical vertebrae is flexion. The classification of a joint as bony, fibrous, cartilaginous, or synovial describes: Definition. d. Both the actin and myosin myofilaments shorten, which shrinks the sarcomere and pulls the Z disk closer together. b. an empty joint cavity The rotator cuff is responsible for the flexible extensions at the elbow joint. d. cruciate ligaments, Which inflammatory joint disease is caused by the bites of ticks that live on mice and deer? c. Bursae are only found in synovial joints, while tendon sheaths are only found in fibrous joints. The most common cause of hip disability is osteoarthritis, a chronic disease in which the articular cartilage of the joint wears away, resulting in severe hip pain and stiffness. c. If a joint can exhibit extension, abduction, and rotation, then it is triaxial. a. more mobile than arm joints. Which statement is true of the cells of bone? Last Update: Jan 03, 2023. a. Gliding movements occur at the intercarpal and intertarsal joints. c. the tetanic contraction is caused by a single stimulus, while the twitch is caused by multiple successive stimuli C parietal and mandible b. synarthroses B compact bone in the diaphysis of a long bone Joint fluid is a transudate of plasma that is actively secreted by synovial cells. C parathyroid hormone b. the insertion 97) ___D___ A) the clavicle and the scapula at the distal ends B) between the humerus and the glenoid . D the xiphoid process is the most inferior part of the sternum, Between adjacent lumbar vertebrae are ____ joints that are characterized by ____. An example of a gliding movement is nodding one's head. Visit this website to read about a patient who arrives at the hospital with joint pain and weakness in his legs. b. pivot Z lines b. Muscles obtain their energy through anaerobic respiration of glucose; this is beneficial because anaerobic repsiration can generate energy quickly The articulating surfaces of the bones at a synovial joint are not bound to each other by connective tissue or cartilage, which allows the bones to move freely against each other. C mandible and temporal bone a. twitch a. dorsiflexion Model the working fluid as an ideal gas with =1.40\gamma=1.40=1.40. True or False: Flexion of the ankle so that the superior aspect of the foot approaches the shin is called dorsiflexion. c. protraction b. the triceps brachii is the synergist, and the brachialis is the prime mover c. greater than normal production of serous fluid lubricates the joint and extends it a. the amount of muscle tone applied to tendons that cross the joint D phosphorus and vitamin D, The hormone that increases the reabsorption of calcium from bones is: Term. Bursitis is the inflammation of a bursa near a joint. What are the possible values for m\mathbf{m}_{\ell}m for b. Depending upon the specific joint of the body, a plane joint may exhibit movement in a single plane or in multiple planes. b. shape of articular surfaces a. nonaxial The cells of this membrane secrete synovial fluid (synovia = a thick fluid), a thick, slimy fluid that provides lubrication to further reduce friction between the bones of the joint. A) All synovial joints are freely movable. A 5,3, 2 A osteocytes II. It contains a lubricating fluid that allows for smooth motions of the tendon during muscle contraction and joint movements. a. Bursae are flattened fibrous sacs wedged between adjacent structures, while tendon sheaths are elongated fibrous sacs that wrap around tendons. The head of the humerus articulates with the acromion process. B thyroxine c. oblique popliteal ligament A) All synovial joints are freely movable. A \rightarrow B \\ a. the lateral patellar retinacula Find the reluctance of a magnetic circuit if a magnetic flux =4.2104Wb\phi=4.2 \times 10^{-4} \mathrm{~Wb}=4.2104Wb is established by an impressed mmf of 400 A-turns. Adduction moves body parts the midine while abduction moves them. Ischial bursitis occurs in the bursa that separates the skin from the ischial tuberosity of the pelvis, the bony structure that is weight bearing when sitting. b. synovial True or False: The gripping of the trochlea by the trochlear notch constitutes the "hinge" for the elbow joint. 2 The following is a list of joints' structural classifications. Which of the following is classified as a fibrous joint? A synovial fluid analysis is a group of tests that checks for disorders that affect the joints. c. fruiting body. c. multiaxial The act of increasing the angle between bones is ____________________. D none of these, The paranasal sinuses open into the Lining the inner surface of the articular capsule is a thin synovial membrane. d. Gliding movements allow flexibility of the upper limbs. b. B they are lined with ciliated epithelium the thidine. Synovial joints are the most common type of joints in the body. D the blood supply to these areas has been closed off, The hormones that increases cell division in growing bones is: Synovial joints are subdivided based on the shapes of the articulating surfaces of the bones that form each joint. D mouth, Which statement is NOT true of the paranasal sinuses? A calcium and Vitamin D These are found at the articulation between the C1 (atlas) and the dens of the C2 (axis) vertebrae, which provides the side-to-side rotation of the head, or at the proximal radioulnar joint between the head of the radius and the radial notch of the ulna, which allows for rotation of the radius during forearm movements. It contains hyaluronic acid. \hline A & 293 & 100 & 500 \\ Amphiarthrosis 3. False A 2 A person who has been diagnosed with a sprained ankle has an injury to the ligaments that attach to that joint. All synovial joints are freely movable. c. ligaments Which of the following is true about the shoulder joint? The joint responds by increasing production of the lubricating synovial fluid, but this can lead to swelling of the joint cavity, causing pain and joint stiffness as the articular capsule is stretched. b. Muscle cells Which of the following provides evidence for evolution? Based on your knowledge of how muscle contraction occurs, what key symptoms would you expect to see and why? 7 Q I, II and III Locomotion and Movement Zoology Practice questions, MCQs, Past Year Questions . c. They contain myofilaments necessary for muscle contraction b. synarthrosis c. pronation and supination D) Immovable joints are called amphiarthroses. C 8, 2, 2 In a hinge joint, the convex end of one bone articulates with the concave end of the adjoining bone (see Figure 9.4.3b). B PTH increases the reabsorption of calcium from bones C yellow bone marrow is mostly adipose tissue A Sutural joints are present between cranial bones of the skull. This movement of the first carpometacarpal joint is what gives humans their distinctive opposable thumbs. A fibrous connective tissue The terms inversion and eversion pertain only to the ________. D it anchors ligaments, Which statement is NOT true of synovial joints? Synovial joints are characterized by the presence of a joint cavity. It provides nutrients and lubrication for articular cartilage. B provides direct attachment for the hip bones Thus, the thumb can move within the same plane as the palm of the hand, or it can jut out anteriorly, perpendicular to the palm. The Nervous System and Nervous Tissue, Chapter 13. The mysosin heads propel the actin myofilaments toward the center of the sarcomere; this pulls the Z disks closer together, which shortens the sarcomere and the entire muscle, Which statement correctly describes the sequence of events in the muscle contraction? D they make the skull heavier in weight, Which of these organs is NOT protected by the rib cage? Performance Lab Flex is another quality joint pain supplement that relieves things like arthritis and inflammation issues. d. biaxial, An example of an interosseus fibrous joint is ________. The hip joint and the glenohumeral (shoulder) joint are the only ball-and-socket joints of the body. D spongy bone in flat and irregular bones, Which statement is NOT true of adult bone marrow? Instead, the articular cartilage acts like a Teflon coating over the bone surface, allowing the articulating bones to move smoothly against each other without damaging the underlying bone tissue. A proteins that become part of bone Which of the following joints would be . (d) all of these. b. the additional joint present doubles the range of motion A thyroxine It contains enzymes only. Synovial joints are the most common type of joint in the body (Figure 9.4.1). d. provide a smooth surface at the ends of synovial joints, d. provide a smooth surface at the ends of synovial joints, Lifting up a glass to take a drink involves the elbow joint. D lacrimal, The paranasal sinuses may become "stuffed up" because: C PTH increases the absorption of calcium by the small intestine In the classification of joints, which of the following is true? a. d. rheumatoid arthritis. D it is not made of osteons and is found within flat and irregular bones. Although it is known that RA is an autoimmune disease in which the body's immune system mistakenly attacks healthy tissue, the cause of RA remains unknown. A B C D A Some synovial joints also have an articular disc or a meniscus, both of which can provide padding between the bones, smooth their movements, or strongly join the bones together to strengthen the joint. A small intestine Since the rotation is around a single axis, pivot joints are functionally classified as a uniaxial diarthrosis type of joint. If a joint can exhibit adduction and abduction, then it is biaxial. True or False: Symphyses are synarthrotic joints designed for strength with flexibility. b) Bursae improve the fit between two ; True or False: Articular cartilage at any synovial joint is a cartilaginous joint. Which of the following joints would allow no movement? C GH Watch this video to learn about the symptoms and treatments for rheumatoid arthritis. b. Epimysium However, ball-and-socket joints allow for large movements, while the motions between bones at a plane joint are small. C both A and B The most commonly involved joints are the hands, feet, and cervical spine, with corresponding joints on both sides of the body usually affected, though not always to the same extent. The six types of synovial joints are pivot, hinge, condyloid, saddle, plane, and ball-and socket-joints (Figure 9.4.3). The calcium binds with troponin on the actin filaments, which permits the myosin heads to latch on and muscle contraction occurs, In the disease myasthenia gravis, the body produces antibodies against receptors for acetylcholine (ACh). The adult human body contains 206 bones and approximately 300 joints, or points where two bones meet. She asks the nurse if she is going to be "crippled." The Lymphatic and Immune System, Chapter 26. D bones/digestion, Which statement is NOT true of PTH and calcitonin? d. The atlanto-axial joints. B bone At a pivot joint, one bone is held within a ring by a ligament and its articulation with a second bone. True or False: The most important factor in joint stability is the depth of the articular surface.