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24 terms

nervous system

Central. peripheal, and parts of the brain
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central nervous system
brain and spinal cord
peripheal nervous sytem
nerves that branch out from the brain and spinal cord and connect to sense and internal organs
neuron
nerve path for impulses traveling to and from the brain
dendrite
part of the neuron which brings impulses to the cell body
axon
part of the neuron whisch carries impulse away from the cell body
myelin
covering of the axon which keeps the electrical impulse from travelingout of the axon
sensory neuron
collects signals from receptor cells and sends them to the brain or spinal cord
interneuron
connects sensory neurons and motor neurons
motor neurons
messgaes from the brain and spinal cord go to the motor neurons which are connected to muscle cells
synapse
gap between neurons
reflex action
by passes normal paths to brain and goes to the spinal cord for immediate action againist danger
sense organs
eyes, nose, skin, toungue, ears
somatic nervous system
controls voluntary action
autonomic nervous system
controls involuntary action
cerebrum
where voluntary activities, intelligence, learning, and judgement occur. Where attitudes, emotions, and personality are formed.
cerebellum
responsible for maintaining our bodies' balance and muscle coordination
medulla
part of the brain that connects to the spinal cord; controls invluntary actions such as heartbeat, blood pressure and breathing rate
midbrain
controls and moves the eyes
pons
regulates waking and sleeping
hypothalamus
regulates body temperature and indicates wneh we need food and drink
thalamus
the brains 'sensory switch board' located at top of brainstem; directs messages to the sensory receiving areas in the cortex
pituitary gland
"master gland" at the base of the brain; regulates growth and controls other endocrine glands
corpus collosum
connects the left & right hemispheres of the cerebrum
brain stem
connects the brain and spinal cord