At a neuromuscular junction
A) actin and myosin filaments slide past one another.
B) intercalated discs are synthesized.
C) neurotransmitters are released.
D) troponin and tropomyosin exchange places.
C
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Which of the following is correctly matched?
A) sympathetic: short preganglionic and long postganglionic fibers B) sympathetic: short preganglionic and short postganglionic fibers C) sympathetic: long preganglionic and short postganglionic fibers D) parasympathetic: short preganglion and long postganglionic fibers E) parasympathetic: contains only preganglionic fibers
Name the fixed end or most stationary, proximal end of the muscle.
A. Origin B. Insertion
Twitch summation
a. is a means by which gradation of muscle contraction may be accomplished. b. results from increasing the number of motor units that are firing within a muscle. c. results from increasing the frequency at which motor units are firing within a muscle. d. both (a) and (b) above. e. both (a) and (c) above.
Taste receptors for the 5 different categories of taste sensations are evenly distributed on the tongue.
Answer the following statement true (T) or false (F)