Muscle Lecture Test Questions Set 1

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1 Muscle Lecture Test Questions Set 1 Fall Muscle cells exhibit the greatest ability to shrink -- this quality of all protoplasm is: a. voluntary b. involuntary c. fusiform d. contractility e. conductivity 2. Skeletal muscle is termed voluntary because it is: a. absolutely under nervous control b. capable of functioning without nervous control c. striated d. not striated e. the major component of the muscular system 3. A muscle requires: a. a nerve supply b. an abundant vascular supply c. connective tissue to bind its fibers together and transmit contractile force d. proprioceptors to furnish information to the central nervous system e. all of the above 4. The innermost connective tissue of an entire muscle is the: a. perimysium b. epimysium c. polymysium d. endomysium e. eumysium 5. Muscles are not named by which of the following: a. location b. color c. shape d. action e. number of heads 6. Muscles are not named by which of the following: a. location b. action c. shape d. strength of contraction e. number of heads 7. The biceps brachii would be which shape:

2 a. convergent b. fusiform c. parallel d. bipennate e. unipennate 8. Closed sacs containing synovial fluid to reduce friction among muscles and nearby structures are: a. aponeuroses b. synergists c. bursae d. fasciae e. tendons 9. Broad, tendinous sheets are called: a. broadus tendonii b. bursae c. sarcomeres d. aponeuroses e. synergists 10. The part of a muscle which is between the origin and the insertion, and which contains the muscle cells, is: a. aponeurosis b. belly c. motor end plate d. sarcoplasm e. proprioceptor 11. The end of a skeletal muscle that is attached to the relatively more moveable point is the: a. origin b. insertion c. epimysium d. endomysium e. bursa 12. In arm flexion the biceps brachii act as: a. agonist b. antagonist c. synergist d. proprioceptor e. nothing, since they have no role in this action 13. Muscles that, by their contraction, assist the prime movers are: a. antagonists b. protagonists c. aponeuroses d. inserters

3 e. synergists 14. When one lowers one's hand down from the shoulder, one is actively utilizing: a. flexor muscles b. extensor muscles c. adductor muscles d. abductor muscles e. supinator muscles 15. When one draws one's hand up to the shoulder, from the anatomic position, one is actively utilizing: a. extensor muscles b. flexor muscles c. adductor muscles d. abductor muscles e. supinator muscles 16. The fulcrum (pivot point) of the arm--when considered as a lever system--is the: a. hand b. wrist c. biceps d. forearm e. elbow 17. A proprioceptor is: a. connective tissue covering around a fasciculus b. for calcium storage and release c. a sense organ within a muscle d. a device for experimental testing of frog skeletal muscle e. none of the above 18. A muscle with its attachments running at an oblique angle to its fibers: a. convergent b. divergent c. pennate d. parallel e. fusiform 19. The sternohyoid would be which shape: a. convergent b. parallel c. fusiform d. unipennate e. bipennate

4 20. The outermost sheath of connective tissue on the entire muscle is the: a. perimysium b. endomysium c. polymysium d. epimysium e. eumysium 21. Skeletal muscles do not attach to: a. bone b. skin c. epithelium d. fascia e. cartilage 22. The end of a skeletal muscle that is attached to the relatively more fixed point is the: a. insertion b. origin c. epimysium d. endomysium e. bursa 23. Smooth and cardiac muscles are termed involuntary because: a. they are absolutely under nervous control b. they are capable of functioning without nervous control c. they lack nuclei d. all movements are initiated by the conscious mind e. all movements are initiated by the unconscious mind 24. The resistance of the upper extremity, when considered as a lever system, is the: a. hand b. biceps brachii c. shoulder d. elbow e. thoracic vertebrae 25. The end of a skeletal muscle that is attached to the relatively more fixed point is the: a. fulcrum b. insertion c. origin d. epimysium e. endomysium

5 26. The rectus femoris would be what shape: a. convergent b. parallel c. fusiform d. bipennate e. multipennate 27. Which of the following terms is not always absolute, since it potentially can be applied to some or all muscles, or ends of a muscle, under different circumstances: a. origin b. insertion c. agonist d. antagonist e. all of the above can be variably applied 28. In arm extension, the biceps brachii acts as: a. agonist b. antagonist c. synergist d. proprioceptor e. nothing, since it has no role in this action 29. The conductivity of muscle and nervous tissues is based upon what quality of all living protoplasm: a. growth b. reproduction c. irritability d. mutability e. movement 30. Which of the following would not be a component of endomysium or perimysium: a. myeloid cells b. fibroblasts c. collagenous fibers d. blood vessels e. nervous tissue 31. Which of the following movements would not be caused by muscle: a. amoeboid b. heart beat c. digestive d. walking e. eye blinking 32. Which of the following would have the greatest tensile strength:

6 a. cartilage b. bone c. skeletal muscle cell d. tendon e. perimysium 33. The sternocleidomastoid would be an example of which naming criterion: a. attachments b. fiber direction c. action d. shape e. size 34. The deltoid would be an example of which naming criterion: a. attachment b. action c. size d. shape e. location 35. A substance which allows some muscle cells to store oxygen: a. myosin b. myoglobin c. proprioceptor d. sarcosome e. actomyosin 36. Which of the following movements would not be caused by muscle action: a. finger flexion b. finger extension c. heartbeat d. ciliary beating e. swallowing 37. Cardiac muscle is termed involuntary because it is: a. absolutely under nervous control b. capable of functioning without nervous control c. striated d. not striated e. deficient in connective tissue content 38. Muscles that do not perform a specified action, but which do assist the relevant agonist(s) to perform more efficiently: a. antagonists

7 b. direct synergists c. indirect synergists d. sarcosomes e. parallel elastic elements 39. A muscle which assists an agonist by stabilizing another critical joint: a. antagonist b. fast fibered c. slow fibered d. indirect synergist e. direct synergist 40. Which of the following is under the absolute control of the nervous system: a. gastrocnemius b. intestinal smooth muscle c. heart d. retinal muscles of the eye e. none of the above 41. The triceps brachii is named according to: a. number of heads of origin b. shape c. action d. fiber direction e. relative size 42. The role of an indirect synergist: a. has the potential to counteract an agonist b. actually counteracts another muscle's action c. assists another muscle by performing the identical action d. pushes a body part in the opposite direction from a particular muscle e. assists an agonist by stabilizing another critical joint 43. The simultaneous contraction of two opposing muscles: a. isotonic b. isometric c. indirect synergism d. direct synergism e. involuntary 44. The relationship between the flexor digitorum longus and flexor digitorum brevis is: a. antagonists b. indirect synergists c. direct synergists d. asynchronous

8 e. isometric 45. Muscles attach to which of the following a. bone b. cartilage c. skin d. mucous membrane e. all of the above 46. Which of the following would most logically be a direct synergist for the flexor digitorum longus: a. biceps brachii b. extensor digitorum c. flexor digitorum brevis d. flexor carpi ulnaris e. extensor carpi ulnaris 47. Muscles do all of the following, except: a. support and protect b. produce almost all body movements c. produce heat d. block openings e. prevent movements to maintain a position 48. A group of muscle cells within a muscle, separated by perimysium: a. fasciclus b. proprioceptor c. multimyoassemblage d. aponeurosis e. sphincter 49. All of the following are related to skeletal muscle tissue's high ATP needs, except: a. abundant vascularity b. myoglobin storage c. extensive nerve supply d. contractility e. glycogen content 50. Which muscle shape permits the development of increased power with relatively short fibers: a. convergent b. divergent c. pennate d. parallel e. spiral

9 51. The term for a muscle which must relax in order for another muscle to perform an isotonic contraction: a. agonist b. antagonist c. synergist d. isometric e. convergent 52. Which of the following muscle functions is at least equally important with producing movements: a. storing calcium b. preventing or limiting movements c. heat production d. blood pressure regulation e. none of the above 53. Which of the following would be a direct synergist for the peroneus longus: a. flexor digitorum longus b. flexor digitorum brevis c. peroneus brevis d. extensor digitorum longus e. extensor digitorum brevis 54. The contraction of a muscle, resulting in shortening and production of its action, is called: a. isometric b. isotonic c. indirect synergism d. involuntary e. voluntary 55. A muscle s insertion is: a. the end that is attached to the relatively less moveable point b. the end that is attached to the relatively more moveable point c. only necessary for the production of an isometric contraction d. only necessary for the production of an isotonic contraction e. always by means of a tendon 56. The pronator teres would be what shape: a. parallel b. spiral c. convergent d. fusiform e. pennate

10 57. An isometric contraction would be caused by which of the following: a. contraction of biceps brachii and relaxation of triceps brachii b. contraction of triceps brachii and relaxation of biceps brachii c. contraction of biceps brachii and triceps brachii d. relaxation of biceps brachii and triceps brachii e. none of the above 58. A muscle shape with a very broad origin and a very narrow insertion is called; a. pennate b. parallel c. fusiform d. convergent e. spiral 59. A convergent muscle is one with a broad origin, tapering to a narrow insertion. 60. A pennate muscle is one with a broad origin, tapering to a narrow insertion. 61. All muscles have tendons. 62. Not all muscles have tendons. 63. Muscle attachments are always by means of a tendon. 64. In order to move a bone, a muscle must have its insertion on that bone. 65. In order to move a bone, a muscle must have its origin on that bone. 66. An antagonist must relax in order for an agonist to perform its action. 67. An antagonist must contract in order for an agonist to perform its action. 68. Muscles can only pull. 69. Muscles can only push. 70. Women will usually have a greater total muscle mass than men.

11 71. Men usually have a greater total muscle mass than women. 72. Skeletal muscles all attach to some part of the skeleton. 73. When flexing the forearm, the biceps brachii would be the agonist. 74. A skeletal muscle is an organ. 75. Speed is the advantage gained by the biceps brachii's mechanically inefficient insertion near its fulcrum. 76. Cardiac muscle is under the absolute control of the nervous system. 77. When considering muscle functions, prevention or the limitation of movements will be at least equally important with causing movements. 78. Skeletal muscle is under the absolute control of the nervous system. 79. The roles of agonist and antagonist are only sometimes interchangeable. 80. When flexing the forearm, the biceps brachii would be the antagonist. 81. Only some muscles' origin and insertion are interchangeable.

Muscle. Dr. Carmen E. Rexach Anatomy 35 Mt San Antonio College

Muscle. Dr. Carmen E. Rexach Anatomy 35 Mt San Antonio College Muscle Dr. Carmen E. Rexach Anatomy 35 Mt San Antonio College Functions Movements of bones and soft body parts Movements of fluids through a tube (blood, digestive) Functions Maintain posture Support soft