Between the start of the latent period and the start of the contraction period, there is a time interval during which the muscle cannot respond to another stimulus. This brief period is known as the:
A) tension period. B) relaxation period. C) refractory period. D) action potential.
Answer: C
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The sarcomere, or contractile unit of striated muscle, extends from one __________ to the next
A) Z-disk B) M-line C) A-band D) I-band Fill in the blank with the correct answer.
Which of the following is not a role of ionic calcium in muscle contraction?
A) triggers neurotransmitter secretion B) promotes breakdown of glycogen and ATP synthesis C) removes contraction inhibitor D) activates epinephrine released from adrenal gland
Select the statements that describe lower motor neurons. (Check all that apply.)
A. Send signals to visceral smooth muscle B. Send signals to skeletal muscles C. Have axons extending into peripheral nerves
Which of the following is NOT a plexus of the vagus (X) nerve?
A) pulmonary B) esophageal C) cardiac D) inferior hypogastric