In performing any given movement, the muscles performing the actual movement are called the prime movers or agonists
a. True
b. False
Indicate whether the statement is true or false
True
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Heroin causes similar, but much stronger effects to the nervous system as endogenous opioids. Heroin's mechanism of action might be that it acts as an:
A. agonist to epinephrine receptors. B. agonist to glycine receptors. C. agonist to the endogenous opioid receptors. D. agonist to serotonin receptors. E. Any of these are possible
As an individual ages, he or she may lose which of the following?
A) Neurons B) Bone density C) Muscle mass D) All of the above
ADH increases the permeability of the distal convoluted tubules and collecting ducts by
A. incorporating aquaporin-2 channels into the apical membrane. B. incorporating aquaporin-3 channels into the apical membrane. C. increasing the number of Na+ ? transport proteins in the membranes. D. decreasing the number of aquaporin-4 channels in the apical membrane.
The sensory cells associated with the deep layers of the epidermis are
A) Pacinian corpuscles. B) Merkel cells. C) melanocytes. D) Meissner's corpuscles. E) keratinocytes.