Psych 3 Chapter 2
A graded depolarization is known as an ____.
EPSP
A temporary hyperpolarization is known as an ____.
IPSP
What happens to acetylcholine after it attaches to a receptor on the postsynaptic cell?
It is broken down into two components.
What is the primary difference between temporal summation and spatial summation?
Spatial summation depends on contributions from more than one sensory neuron.
Adrenocorticotropic hormone (ACTH) controls secretions of the ____.
adrenal cortex
You are eating a food containing tryptophan. What can you consume with it to increase its entry to the brain?
carbohydrates
Neuropeptides are synthesized in the ____.
cell body
Many neurons release neuropeptides mostly from the ____.
dendrites
COMTand MAO are ____.
enzymes that convert catecholaminesinto inactive chemicals
The catecholamines include ____.
epinephrine, norepinephrine, and dopamine
Depolarization is to ____ as hyperpolarization is to ____.
excitation; inhibition
A receptor can directly open a channel and thereby exert a(n) ____ effect, or it can produce slower but longer ____ effects.
ionotropic; metabotropic
Which neurotransmitter is released by stimulated neurons to dilate the blood vessels?
nitric oxide
Sherrington studied ____, which are automatic muscular responses to stimuli.
reflexes
What is the proper ordering of a reflex arc?
sensory neuron, interneuron, motor neuron.
A certain weak stimulus produces no reflexive response, but a rapid repetition of that stimulus may produce such a response. What is this phenomenon called?
temporal summation
Temporal summation is to ____ as spatial summation is to ____.
time; location