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Ch. 7 Nervous System

TermDefinition
stimulus a change or signal in the environment that makes you react
response your body's reaction to a stimulus
nerve impulse the message a neuron carries
neuron nerve cell
axon the part of the neuron that carries the impulse away from the cell body
nerve a bundle of nerve fibers
dendrite picks up the nerve impulse and sends it to the cell body
sensory neuron a neuron that picks up a stimulus
interneuron a neuron that carries and impulse to another neuron
motor neuron a neuron that sends an impulse to a muscle or gland
synapse the place where a neuron transfers and impulse to ANOTHER neuron
Central Nervous System the brain and spinal cord
Peripheral Nervous System the nerves in your body are part of this
Brain the control center of your body
Spinal Cord a column of nerve tissue that links the brain to the peripheral nervous system
Cerebrum the part of your brain in charge of memory
Cerebellum the part of your brain in charge of balance
Brain Stem (Medulla) the part of your brain in charge of involuntary actions like breathing and heart beat
Somatic Nervous System controls voluntary actions
Autonomic Nervous System controls involuntary actions
Reflex an automatic response
Concussion a brain injury
Pupil the opening where light enters the eye
Retina lines the back of the eye
Lens focuses light in the eye
Iris the colored part of the eye
Optic Nerve allows the eye to send messages to the brain
Hammer, Anvil, Stirrup bones in the ear
Taste Buds sensory receptors on your tongue
Created by: 7thScience
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