NAU Bio 201 Exam 3 Questions With Correct Solutions, Already Passed!!
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Course
NAU Bio 201
Institution
NAU Bio 201
action potential - the change in electrical potential associated with the passage of an impulse
along the membrane of a muscle cell or nerve cell.
Eppendymal cells - produce cerebrospinal fluid
satellite cells - surround neuron cell bodies in PNS
Schwann cells - produce myelin in PNS
stages of...
NAU Bio 201 Exam 3
action potential - the change in electrical potential associated with the passage of an impulse
along the membrane of a muscle cell or nerve cell.
Eppendymal cells - produce cerebrospinal fluid
satellite cells - surround neuron cell bodies in PNS
Schwann cells - produce myelin in PNS
stages of AP - 1. depolarization-->threshold reached, Na+ IN
--peak: VG Na+ channels Inactivate
2.repolarization--> K+ OUT
3. hyperpolarization- K+ closes slowly, extra leaves
Astrocytes (CNS) - for blood brain barrier; control external environment of neurons
Microglia - Act as phagocytes, eating damaged cells and bacteria, act as the brains immune
system
Oligodendrocytes - produce myelin in CNS
resting membrane potential - -70mV
graded potential - a shift in the electrical charge in a tiny area of a neuron
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