Old Material Flashcards
nervous system
an interacting network of neurons that conveys information through the body
central nervous system
composed of the brain and spinal cord
peripheral nervous system
CNS to the body’s organs and muscles
automatic nervous system
involuntary and automatic commands
sympathetic nervous system
prepares body for action
parasympathetic nervous system
helps the body return to a normal resting state
somatic nervous system
voluntary muscle movement
neuron
cells in the nervous system that communicate with each other to perform information processing tasks
dendrites
parts of the neuron that receive information from other neurons and relay it to the cell body
cell body (soma)
part of the neuron that coordinates the information-processing tasks and keeps the cell alive
axons
carries information to other neurons, muscles, or glands
myelin sheathe
an insulating layer of fatyt material
synapse
region between an axon and dendrites
types of neurons
sensory, motor, interneurons
sensory neuron
receive information from external world and convey info to the brain
motor neuron
carry signals from spinal cords to muscles
interneurons
connect sensory neurons, motor neurons, and other interneurons
neurotransmitters
chemicals that transmit information across the synapse to dendrites
endorphins
help dull experience of pain and evaluates moods
dopamine
involved in regulating motor behavior, motivation, and emotional arousal
serotonin
influence mood and arousal
glutamate
excitatory neurotransmitter which enhances the transmission of info between neurons
GABA
inhibitory neurotransmitter which prevents firing of neurons and neurons become hyperpolarized
Acetylcholine
involved in voluntary motor control, attention, learning, sleeping, memory
