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Chapter 2: The Brain and Behavior
The Nervous System
20
Psychology
12th Grade
09/12/2013

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Cards

Term
dentrites
Definition
receive incoming messages
Term
soma
Definition
cell body
Term
axon
Definition
carries the messages
Term
axon terminals
Definition
what connects to the dentrites, it is located at the end of axon
Term
sensory neurons
Definition
getting information from your enviroment
Term
motor neurons
Definition
receive messages from brain
Term
glial cells
Definition
surrounds the cell body. provides protection, support, nutrition, helps remove waste
Term
resting potential
Definition
any neuron at rest
Term
threshold
Definition
nerve impulse is triggered, ready to fire
Term
action potential
Definition
the nerve impulse
Term
ion channels
Definition
tiny openings through axon membranes
Term
all or nothing laws
Definition
a nerve can't partially fire
Term
negative after potential
Definition
drop in electrical charge below the resting potential
Term
neurotransmitters
Definition
chemicals released by neurons
Term
receptor sites
Definition
areas on surface of neurons or oher cells that are sensitive to hormones and neurotransmitters
Term
acetylcholine
Definition
helps activate muscles, anthing that involves memory
Term
neuropeptides
Definition
special chemical, impacts other neurons to send out messages
Term
enkephalins
Definition
pain and stress
Term
endorphins
Definition
pain
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