The main role of calcium ions at chemical synapses is to
A. depolarize the axon terminal of the presynaptic cell.
B. bind to neurotransmitter receptors on the postsynaptic cell.
C. cause fusion of synaptic vesicles with the plasma membrane of the axon terminal.
D. interfere with IPSPs in the postsynaptic cell.
E. diffuse across the synaptic space and enter the postsynaptic cell.
C
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Lipophilic hormones are:
A) water soluble B) fat soluble C) produced by exocrine glands D) only produced after puberty E) only produced during embryonic development
The patellar region is located ________
A) on the anterior knee B) on the posterior of the head C) superior to the pubic region D) inferior to the sural region
Which type of innervation causes the heart rate to increase?
A. Parasympathetic B. Sympathetic
The anterior part of each atrium is a flaplike extension called a(n) _______________
Fill in the blank with correct word.