PSU Bio 161 Test 3 Questions And
Answers With Verified Solutions Already
Passed Latest Updated 2025
synapse - ANSWER✔✔ space between neurons, where the conversion from an
electrical signal to a chemical signal occurs
neruotransmitter - ANSWER✔✔ chemical messenger released at the end of a
nerve cell
presynaptic cell - ANSWER✔✔ neuron that sends message, gives off the electrical
signal
postsynaptic cell - ANSWER✔✔ neuron that receives message
voltage-gated calcium channels - ANSWER✔✔ A membrane protein forming a
pore that is permeable to Ca2+ ions and gated by depolarization of the membrane.
cerebellum - ANSWER✔✔ located at the rear of the brainstem, a large structure of
the hindbrain that controls fine motor skills.
pons - ANSWER✔✔ part of the brainstem, a brain structure that relays
information from the cerebellum to the rest of the brain
medulla - ANSWER✔✔ the base of the brainstem; controls heartbeat and
breathing
brainstem - ANSWER✔✔ contains midbrain, pons, and medulla oblongata
Meninges of the brain - ANSWER✔✔ dura mater, arachnoid mater, pia mater
dura mater - ANSWER✔✔ thick outermost layer of the meninges
arachnoid mater - ANSWER✔✔ weblike middle layer of the three meninges
pia mater - ANSWER✔✔ thin, delicate, innermost membrane of the meninges.
cerebral spinal fluid - ANSWER✔✔ A solution that fills the hollow cavities of the
brain and circulates around the brain and spinal cord. Provides nourishment,
cushions, and removes wastes.
ventricles - ANSWER✔✔ canals in the brain that contain cerebrospinal fluid
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