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A&P 9-12.3
Articulations, Muscles, Nerves
| Question | Answer |
|---|---|
| Joints can be classified structurally as - bony - fibrous - cartilaginous - synovial - all of the above | all of the above |
| The synarthrosis that binds the teeth to the bony sockets is a - suture -gomphosis -synotosis | gomphosis |
| An immovable joint is a - symphysis - diarthrosis - synarthrosis | synarthrosis |
| A synovial joint is an example of a - syndesmosis -diarthrosis - synarthrosis | diarthrosis |
| A ligamentous connection such as an ante brachial interosseous membrane is called a -gomphosis -synchondrosis -syndesmosis | syndesmosis |
| A slightly moveable joint is an A) synarthrosis. B) diarthrosis. C) amphiarthrosis. D) gomphosis. E) synostosis. | amphiarthrosis |
| A suture is an example of a(n) A) synarthrosis. B) syndesmosis. C) symphysis. D) diarthrosis. E) amphiarthrosis. | synarthrosis |
| An epiphyseal line is an example of a A) gomphosis. B) synchondrosis. C) synostosis. D) symphysis. E) syndesmosis. | synostosis |
| Dense fibrous connective tissue is to a suture as a periodontal ligament is to a(n) A) amphiarthrosis. B) syndesmosis. C) synostosis. D) synchondrosis. E) gomphosis. | gomphosis |
| An example of a synchondrosis is the articulation of the A) ribs with the sternum. B) radius and the ulna. C) femur with the acetabulum. D) atlas and the axis. E) navicular bone with the cuniform bones. | ribs with the sternum |
| A freely movable joint is a(n) A) synarthrosis. B) diarthrosis. C) amphiarthrosis. D) syndesmosis. E) symphysis. | diarthrosis |
| The intervertebral disc joint is called a A) synarthrosis. B) glide joint. C) condylar joint. D) synchondrosis. E) symphysis. | symphysis |
| Which of the following in one of the four major types of synarthrotic joints A) suture B) gomphosis C) synchondrosis D) synostosis E) All of the answers are correct. | all the answers are correct |
| syndesmosis is to ligament as symphysis is to A) fibrous cartilage. B) dense regular connective tissue. C) periodontal ligament. D) rigid cartilaginous bridge. E) completely fused. | fibrous cartilage |
| structurally, the pubis symphysis is classified as a ---- articulation A) cartilaginous B) bony C) synovial D) fibrous E) diarthrotic | cartilaginous |
| which of the following occurs when the articular cartilage is damaged A) The matrix begins to break down. B) The exposed surface appears rough. C) Friction in the joint increases. D) Normal synovial joint function is unable to continue. | all the answers are correct |
| which of the following is not a function of synovial fluid A) shock absorption B) increases osmotic pressure within joint C) lubrication D) provides nutrients E) protects articular cartilages | increase osmotic pressure within joint |
| Which of the following is not a property of articular cartilage A) covered by perichondrium B) lubricated by synovial fluid C) enclosed by an articular capsule D) similar to hyaline cartilage E) smooth, low-friction surface | covered by perichondrium |
| the surface of articular cartilage is A) slick. B) flat. C) smooth. D) rough. E) both slick and smooth. | both slick and smooth |
| Which of the following is not considered an accessory synovial structure A) fat pads B) menisci C) tendons D) bursae E) synovial membrane | synovial membrane |
| Which of the following is not a property of synovial joints A) freely movable B) lined by a secretory epithelium C) covered by a serous membrane D) contain synovial fluid E) covered by a capsule | covered by a serous membrane |
| Usually found outside the capsule,---- protect the articular cartilage and act as packing material for the joint A) ligaments B) tendons C) bursae D) menisci E) fat pads | fat pads |
| small pockets of synovial fluid that reduce friction and act as a shock absorber where ligaments and tendons rub against other tissues are called A) fat pads. B) menisci. C) bursae. D) lacunae. E) fasciae. | bursae |
| ---subdivide synovial cavities, channel the flow of synovial fluid, and allow for variations in the shapes of the articular surfaces A) Fat pads B) Menisci C) Bursae D) Lacunae E) Fasciae | menisci |
| a----occurs when articulating surfaces are forces out of position A) fracture B) bunion C) bursitis D) dislocation E) sprain | dislocation |
| the three functions of synovial fluid are nutrient distribution, shock absorption, and A) stabilization. B) lubrication. C) padding. D) strengthening. E) enzyme secretion. | lubrication |
| a ---- is a tender nodule formed around bursar over the base of the greater toe A) spur B) blister C) callus D) bunion E) pimple | bunion |
| A collagenous type of connective tissue that reinforces the synovial joint and is found outside the joint capsule is called the A) extracapsular tendon. B) intracapsular ligament. C) extracapsular ligament. D) intracapsular tendon. E) meniscus. | extracapsular ligament |
| Which one of the following is not a stabilizing factor of synovial joints A) skeletal muscles around the joint B) the presence of a meniscus C) collagen fibers of the joint capsule D) fat pads around the joint E) the synovial membrane | the synovial membrane |
| The joint between the forearm bones and the wrist is a ---joint A) saddle B) glide C) hinge D) condylar E) pivot | condylar |
| ankle extension is also called A) dorsiflexion. B) inversion. C) eversion. D) plantar flexion. E) protraction. | plantar flexion |
| A movement away from the midline of the body is called A) inversion. B) abduction. C) adduction. D) flexion. E) extension. | abduction |
| the ankle joint is a ---joint A) condylar B) saddle C) hinge D) ball-and-socket E) gliding | hinge |
| the joints that connect the four fingers with the metacarpal bones are A) condylar joints. B) saddle joints. C) pivot joints. D) hinge joints. E) condyloid joints. | condylar joints |
| the joint between the trapezium and metacarpal bone of the thug is an example of a ---joint A) saddle B) gliding C) condylar D) hinge E) pivot | saddle |
| muscle tissue consist chiefly of cells that are highly specialized for A) conduction. B) contraction. C) peristalsis. D) cushioning. E) secretion. | contraction |
| which of the following is a recognized function of skeletal muscle A) produce movement B) maintain posture C) maintain body temperature D) guard body entrances and exits E) All of the answers are correct. | all the answers |
| at the end of the muscle, the collage fines of the epimysium, perimysium, and endomysium, come together to form a A) tendon. B) satellite cell. C) ligament. D) tenosynovium. E) sheath. | tendon |
| the dense layer of connective tissue that surrounds an entire skeletal muscle is the A) tendon. B) epimysium. C) endomysium. D) perimysium. E) fascicle. | epimysium |
| nerves and blood vessels that service a muscle fiber are located in the connective tissues of its A) endomysium. B) perimysium. C) sarcolemma. D) sarcomere. E) myofibrils. | endomysium |
| a fascicle is a A) group of muscle fibers that are encased in the perimysium. B) layer of connective tissue that separates muscle from skin. C) group of muscle fibers that are all part of the same motor unit. | group of muscle fibers that are encases in the perimysium |
| the delicate connective tissue that surrounds the skeletal muscle fibers and ties muscle fibers together is the A) endomysium. B) perimysium. C) epimysium. D) superficial fascia. E) periosteum. | endomysium |
| the bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is called a (n) A) fascicle. B) tendon. C) ligament. D) epimysium. E) myofibril. | tendon |
| a(n) --- can be described as a broad tendinous sheet A) fasciae B) retinaculum C) aponeurosis D) interstitium E) tympanum | aponeurosis |
| interactions between actin and myosin filaments of the sarcomere are responsible for A) muscle fatigue. B) the conduction of neural stimulation to the muscle fiber. C) muscle contraction. D) muscle relaxation. | muscles contraction |
| in a sarcomere, the central portion of thick filaments are linked laterally by proteins of the A) Z line. B) M line. C) H band. D) A band. E) I band. | m line |
| the advantage of having many nuclei in a skeletal muscle fiber is the ability to A) contract much more forcefully. B) produce more ATP with little oxygen. C) store extra DNA for metabolism. D) produce large amounts of muscle proteins | produce large amounts of muscle proteins |
| skeletal muscle fibers are formed from embryonic cells called A) sarcomeres. B) myofibrils. C) myoblasts. D) fascicles. E) myomeres. | myoblasts |
| the repeating unit of skeletal muscle fiber is the A) sarcolemma. B) sarcomere. C) sarcoplasmic reticulum. D) myofibril. E) myofilament. | sarcomere |
| the plasma membrane of a skeletal muscle fiber is called the A) sarcolemma. B) sarcomere. C) sarcosome. D) sarcoplasmic reticulum. E) sarcoplasm. | sarcolema |
| which of the following best describes the term sarcomere A) protein that accounts for elasticity of resting muscle B) repeating unit of striated myofibrils C) storage site for calcium ions | repeating unit of striated myofibrils |
| muscle fibers differ from "typical cells" it that muscle fibers A) lack a plasma membrane. B) have many nuclei. C) are very small. D) lack mitochondria. E) have large gaps in the cell membrane. | have many nuclei |
| which of the following best describes the term sarcoplasmic reticulum B) repeating unit of striated myofibrils C) storage and release site for calcium ions D) thin filaments are anchored here E) largely made of myosin molecules | storage and release site for calcium ions |
| which of the following best describes the term Z line B) repeating unit of striated myofibrils C) storage site for calcium ions D) thin filaments are anchored here E) largely made of myosin molecules | thin filaments are anchored here |
| the region of the sarcomere containing the thick filaments is the A) Z line. B) M line. C) H band. D) A band. E) I band. | A band |
| the skeletal muscle complex known as the triad consist of A) actin, myosin, and titin filaments. B) a transverse tubule and two terminal cisternae. D) A bands, H bands, and I bands. E) actin, myosin, and sarcomeres. | a transverse tuble and two terminal cisternae |
| the area in the center of the A band that contains no thin filaments is the A) Z line. B) M line. C) H band. D) I band. E) zone of overlap. | H band |
| at rest, the tropomyosin molecule is held in place by A) actin molecules. B) myosin molecules. C) troponin molecules. D) ATP molecules. E) calcium ions. | troponin molecules |
| each thin filament consists of A) two actin protein strands coiled helically around each other. B) chains of myosin molecules. D) a rod-shaped structure with "heads" projecting from each end. E) a double strand of myosin molecules. | chains of myosin molecules |
| the region of the sarcomere that always contains thin filaments is the A) Z line. B) M line. C) H band. D) A band. E) I band. | I band |
| at rest, active site on the active are blocked by A) myosin molecules. B) troponin molecules. C) tropomyosin molecules. D) calcium ions. E) ATP molecules. | tropomyosin molecule |
| the series of membranous channels that surround each myofibril is the A) sarcoplasmic reticulum. B) sarcoplasm. C) sarcomere. D) sarcolemma. E) endomysium. | sarcoplasmic reticulum |
| all of the following proteins are part of the tin filaments except A) actin. B) tropomyosin. C) troponin. D) titin. E) None of the answers is correct; there are no exceptions. | titin |
| when a skeletal muscle fiber contracts, the A) H bands and I bands get larger. B) zones of overlap get larger. C) Z lines move further apart. D) width of the A band increases. E) All of the answers are correct. | zones of overlap get larger |
| since each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten the muscle fiber A) lengthens. B) shortens. C) strengthens. D) weakens. E) pulls from the middle. | shortens |
| active sites on the actin become available for binding after A) actin binds to troponin. B) troponin binds to tropomyosin. C) calcium binds to troponin. D) calcium binds to tropomyosin. E) myosin binds to troponin. | calcium binds to tropomyosin |
| the action potential is conducted into skeletal muscle fiber by A) motor end plates. B) neuromuscular junctions. C) transverse tubules. D) triads. E) sarcoplasmic reticulum. | transverse rubles |
| the most important factor is decreasing the intracellular concentration of calcium ion after contraction is A) active transport of calcium across the sarcolemma. B) active transport of calcium into the sarcoplasmic reticulum. | active transport of calcium into the sarcoplasmic reticulum |
| when calcium ion binds to troponin A) tropomyosin rolls away from the active site. B) active sites on the myosin are exposed. C) actin heads will bind to myosin. D) muscle relaxation occurs. E) myosin shortens. | tropomyosin rolls away from the active site |
| Physical evidence that supports the sliding filament theory of muscle contraction includes B) decreased width of the H band during contraction. C) increased width of the I band during contraction. | decreased width of the H band during contraction |
| the protein that is found in the Z line of a sarcomere is called A) actinin. B) titin. C) nebulin. D) myosin. E) actin. | actinin |
| the protein that regulates muscle contraction by controlling the availability of active sites on actin is called A) actin. B) titin. C) myosin. D) tropomyosin. E) nebulin. | tropomyosin |
| thin filaments are mostly made of the protein A) actin. B) titin. C) myosin. D) tropomyosin. E) nebulin. | actin |
| thick filaments are made of the protein A) actin. B) titin. C) myosin. D) tropomyosin. E) nebulin. | myosin |
| muscles that guard entrances and exits of internal passageways are ---muscles A) parallel B) convergent C) pennate D) bipennate E) circular | circular |
| in a ---muscle, the fascicles are concentrically arranged around an opening. A) convergent B) parallel C) straight D) pennate E) circular | circular |
| the type of muscle whose functional characteristics most closely resemble those of its muscles fibers os the ---muscle A) pennate B) circular C) parallel D) convergent E) divergent | parallel |
| in a ---muscle, the muscle fibers and fascicles lie in a slanted or oblique position to the tendon A) parallel B) circular C) pennate D) convergent E) divergent | pennate |
| ---muscle fibers pull in different directions, permitting different actions depending on stimulation A) Convergent B) Parallel C) Straight D) Pennate E) Circular | convergent |
| most of the skeletal muscles in the body are ---muscles A) convergent B) parallel C) straight D) pennate E) circular | parallel |
| in a convergent muscle, fascicles converge on a common attachment site that may be a slender band of collagen fibers known as a(n) A) retinaculum. B) raphe. C) aponeurosis. D) orbicularis. E) ligament. | raphe |
| which of the following is NOT a type of fascicle arrangement A) parallel B) palmate C) unipennate D) circular E) convergent | palmate |
| a lever consists of A) a tendon and a muscle. B) a rigid structure. C) a fulcrum. D) a bone, a muscle, and a nerve. E) a rigid structure and a fulcrum. | a rigid structure and a fulcrum |
| the most common lever system in the body are those that have the applied force between the fulcrum and the load, These are called - levers A) first-class B) second-class C) third-class D) fourth-class E) fifth-class | third class |
| contracting the gastrocnemius muscles to elevate the body on the toes involves a - lever A) first-class B) second-class C) third-class D) fourth-class E) fifth-class | second class |
| the fulcrum of a lever system is the A) joint. B) muscle. C) bone. D) resistance. E) load. | joint |
| when the fulcrum is located between the lots and the force, it is called a - lever A) first-class B) second-class C) third-class D) fourth-class E) compound | first class |
| a(n) - is a muscle whose contraction is chiefly responsible for producing a A) prime mover B) motor-unit C) antagonist D) opposition E) synergist | prime mover |
| which of these phrases most aptly describes "muscle insertion" A) broad tendon sheet B) connective tissue that surrounds a single muscle fiber C) tendon attachment that doesn't move D) tendon attachment that moves | tendon attachment that moves |
| muscles that insert on the olecranon process of the ulna can act to A) flex the forearm. B) extend the forearm. C) abduct the forearm. D) adduct the forearm. E) extend the carpals. | extend the forearm |
| A muscle that assists the muscle that is primarily responsible for a given action is a(n A) agonist. B) antagonist. C) synergist. D) originator. E) levator. | synergist |
| the insertion end of the biceps brachia muscle of the anterior upper arm is A) at the proximal end of the muscle. B) at the distal end of the muscle. C) on the dorsal side of the muscle. D) on the lateral side of the muscle. E) the thumb. | at the distal end of the muscle |
| the end of a muscle that is attached to the point that moves when the muscle contracts is called the A) origin. B) aponeurosis. C) insertion. D) tendon. E) lever. | insertion |
| the end of a muscle that remains stationary when the muscle contracts is called the A) origin. B) aponeurosis. C) insertion. D) tendon. E) lever. | origin |
| a type of muscle whose action opposes that of another muscle is called a (n) A) synergist. B) fixator. C) agonist. D) prime mover. E) antagonist | antagonist |
| a muscle that assists another by preventing movement at another joint is called A) synergist. B) fixator. C) agonist. D) prime mover. E) antagonist. | fixator |
| The names of the muscles can indicate all of the following except A) the angle of the muscle relative to the long axis of the body. B) the action of the muscle. C) the location of the muscle. E) the collagen content of the muscle. | the collagen content of the muscle |
| A muscle whose name ends in the suffix -glossus would be found within or attached to the A) chin. B) cheek. C) jaw. D) tongue. E) lips. | tongue |
| Muscles including the term wapitis would be found within or attached to the A) head. B) neck. C) thorax. D) abdomen. E) groin. | head |
| Muscles with fibers that run parallel to the long axis to the long axis of the body are called A) lateralis. B) transversus. C) rectus. D) obliquus. E) medialis. | rectus |
| each of the following terms is a descriptive term for a muscle's action except A) levator. B) pronator. C) extensor. D) sartorius. E) adductor. | sartorius |
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