Beta receptors
A) are especially sensitive to epinephrine and relatively unresponsive to norepinephrine.
B) may produce inhibition only.
C) cause constriction of blood vessels in skeletal muscles.
D) respond by opening ion channels that hyperpolarize the plasmalemma in heart muscle cells.
E) may produce excitation only.
A) are especially sensitive to epinephrine and relatively unresponsive to norepinephrine.
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The control of voluntary movement can be divided into what three steps?
What will be an ideal response?
The hair cells that detect sound vibrations lie on the ________ membrane
A) basilar B) tectorial C) tympanic D) vestibular
What is the function of ADH?
A. Tissue growth B. Bone reabsorption C. Increase metabolic rate D. Water retention
What is the responsibility of the sodium/potassium pump?
A. Reestablish and maintain resting membrane potential. B. Prepare the neuron for another nerve impulse. C. Pump sodium out of the cell using active transport. D. All of these are correct.