Astrocytes may impact synaptic plasticity by:
A. Modulating neurotransmitter release
B. Modulating postsynaptic receptor expression
C. Modulating new synapse formation
D. All of the above
ANS: D
Rationale: Astrocytes influence synaptic plasticity through modulating neurotransmitter release and receptor expression at the postsynaptic membrane. Astrocytes may also be important for new synapse formation after a stroke.
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The way in which an individual responds to stress is influenced by
A. biological predispositions. B. past experiences. C. current circumstances. D. personality type. E. All of these influence the way an individual response to stress.
__________tissue is designed to contract.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is false regarding the predominant attitude in the U.S. toward death?
A. A majority of Americans witness the death of at least one loved one during their lifetimes. B. Instead of facing death directly, people tend to amuse themselves with unrealistic portrayals on TV and movies. C. Those who view death as a relief from pain may have a partial sense of welcoming death. D. Many people seek to avoid any thought or mention of death and, instead of facing death directly, people tend to amuse themselves with unrealistic portrayals on TV and movies.
The combining form that means lens is:
A. corne/o B. kerat/o C. phac/o D. scler/o