In general, a skeletal muscle is composed ofa: connective tissue sheathsb: nervesc: arteriesd: veinse: muscle fibers
A. a, b, c, d, e
B. a, b, c, e
C. a, b, d, e
D. b, c, d, e
E. a, b, c, d
Answer: A
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What is the fate of ACh following binding to receptors?
a. it remains bound causing continued excitement. b. it is removed by the enzyme acetylcholinesterase. c. it is actively reabsorbed the axon terminal. d. it is passively reabsorbed by the muscle cell. e. none of these answers.
In which of the following would the motor units have the fewest muscle fibers?
A) muscles of the neck B) postural muscles of the back C) muscles that control the eyes D) thigh muscles E) calf muscles
As the filtrate passes through the renal tubules, approximately what percentage is reabsorbed and returned to the circulation?
A) 1 B) 38 C) 63 D) 74 E) 99
Which of the following activities would fatigue your hand muscles the fastest?
A) Throwing a ball in the air and catching it as many times as you can B) Bouncing a ball on the floor as many times as you can C) Squeezing a ball as hard as you can without stopping D) Alternately squeezing a ball then relaxing