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AP Psych Unit 2 Lesson 1-5 Mrs. Tilt COMPREHENSIVE QUESTIONS AND CORRECT ANSWERS 100% GRADE A+
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AP Psych Unit 2 Lesson 1-5 Mrs. Tilt COMPREHENSIVE QUESTIONS AND CORRECT ANSWERS 100% GRADE A+
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AP Psych Unit 2 Lesson 1-5 Mrs. TiltStudy online at https://quizlet.com/_drdfnq
1. neuron a specialized cell transmitting nerve impulses; a nerve cell.
2. cell body
3. dendrite the bushy, branching extensions of a neuron that receive
messages and conduct impulses toward the cell body
4. axon the extension of a neuron, ending in branching terminal
fibers, through which messages pass to other neurons or
to muscles or glands
5. myelin sheath a fatty tissue layer segmentally encasing the axons of
some neurons; enables vastly greater transmission speed
as neural impulses hop from one node to the next
6. glial cells type of cell that provides physical and chemical support
to neurons and maintain their environment. Located in the
central nervous system and peripheral nervous system,
glial cells are sometimes called the "glue" of the nervous
system, as well as neuroglia or just glia
, AP Psych Unit 2 Lesson 1-5 Mrs. Tilt
Study online at https://quizlet.com/_drdfnq
7. action potential Reversal of electrical charge across the membrane of a
resting neuron that travels down the axon of the neuron
as a nerve impulse.
8. threshold Level of stimulation needed to trigger a neural impulse.The
reversal of charge is called an action potential. It begins
when the neuron receives a chemical signal from another
cell or some other type of stimulus. If the stimulus is strong
enough to reach threshold, an action potential will take
place is a cascade along the axon.
9. refractory period a period of inactivity after a neuron has fired
10. all or none re- Increasing the level of stimulation above the threshold will
sponse not increase the neural impulse's intensity. The neuron's
reaction is an all-or-none response. Like guns, neurons
either fire or they do not. As strong stimulous can trigger
more nurons to fire and to fire more often. But it does not
impact strength or speed. Squeezing a trigger harder will
not make it go faster.
11. neural synapse Meeting between neuron is a neural synapse. There is a
brief interreuption in transmission. The junction between
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