Intrafusal muscle fibers but not extrafusal fibers:
A. receive only sensory innervation
B. are innervated by only one motor neuron
C. contain an equatorial region with little to no contractile protein
D. run the length of the muscle
ANS: C
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A hormone with an effect that lasts for days would have a
A) long half-life. B) no half-life. C) whole life. D) short half-life.
The volume of gas inspired or expired in a quiet respiration cycle is the ________.
A. inspiratory reserve volume B. tidal volume C. vital capacity D. residual volume
Inhibiting phosphodiesterase would cause the photoreceptor to undergo ________.
A. EPSPs B. repolarization C. hyperpolarization D. depolarization
What part of the brain is the "boss" of the autonomic nervous system (ANS)?
A) thalamus B) pons C) hypothalamus D) basal nuclei