At chemical synapses, most of the synaptic delay (the time between the arrival of a presynaptic action potential and the appearance of a postsynaptic EPSP or IPSP) is attributable to the
A) the time needed for Ca2+ to enter the terminal and the vesicles to fuse.
B) rate of diffusion of neurotransmitter molecules across the synapse.
C) rate at which vesicles move to the presynaptic membrane and rupture.
D) interaction of the transmitter with its receptors.
Correct Answer:
Verified
Q23: Most IPSPs are attributable to the
A) opening
Q24: Whether a synapse is excitatory or inhibitory
Q25: Substances that bind to receptor proteins and
Q26: Refer to the figure. Q27: _ receptors recognize the synaptic transmitter, but Q29: Which process is not involved in chemical Q30: The specialized presynaptic membrane receptors that remove Q31: Most ACh receptors in the brain are Q32: The nicotinic ACh receptor is made up Q33: The lock-and-key analogy is used to describe
A)
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