The structural theory that explains how a muscle fiber contracts is called the ________ theory
A) sliding filament
B) excitation-contraction coupling
C) neuromuscular
D) muscle contraction
E) action-myosin interaction
A
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Compared to skeletal muscle, smooth muscle
A. contracts more rapidly and relaxes more slowly. B. contracts more slowly and relaxes more rapidly. C. contracts more rapidly and relaxes more rapidly. D. contracts more slowly and relaxes more slowly.
Young hamsters, gerbils, and rabbits are born ____________: very immature, blind, and hairless
Fill in the blank(s) with correct word
A presynaptic neuron releases neurotransmitters to be received by a postsynaptic neuron. Which general property of neurons does this presynaptic neuron demonstrate?
A. Irritability B. Conductivity C. Excitability D. Secretion
The gluteus maximus is the most powerful muscle during __________.
A. flexion B. medial rotation C. lateral rotation D. extension