A drug that functions as an agonist
A. blocks a receptor so that the neurotransmitter cannot bind.
B. causes great pain if taken in too high a dose.
C. activates a receptor, helping a neurotransmitter bind or triggering an action potential in some other way.
D. relieves pain.
Answer: C
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Calcium homeostasis involves
a. immediate adjustments required to maintain a constant free Ca2+ concentration on a minute-to-minute basis b. slowly responding adjustments required to maintain a constant total amount of Ca2+ in the body c. actions of parathyroid hormone d. both a and c e. both b and c
Auscultation is __________.
A. listening to natural sounds made by the body. B. looking at the body's appearance in a physical examination. C. feeling a structure with the hands. D. tapping on the body and feeling for resistance. E. examining test results for diagnosis of symptoms involving the abdominal cavity.
A unipolar neuron with a soma in a ganglion just outside the spinal cord is functionally classified as which of the following?
A. Somatic motor neuron B. Visceral motor neuron C. Interneuron D. Sensory neuron E. Synaptic neuron
Which of the following does not contribute to the sense of equilibrium?
A. Otolithic membrane B. Saccule C. Vallate papillae D. Semicircular canals E. Utricle