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Mrs. T's Nerv 4

Mrs. T's Nervous Stack 4

QuestionAnswer
gap between neurons synaptic cleft (synapse)
end of an axon axon terminal
contain neurotransmitters in axon terminal vesicles
these prevent a neurotransmitter from sending an impulse more than once inactivator enzymes
where the neurotransmitters fit on the post-synaptic membrane receptors
part of the brain that links the nervous system to the endocrine system hypothalamus
the "emotional" brain limbic system
gray matter is made up of these neuron cell bodies
function of neuroglial cells protect and support neurons
gaps along the myelin sheath whcih allow impulses to travel faster Nodes of Ranvier
conduct impulses away from cell body of neuron axon
type of neuron that carries stimuli to the CNS sensory
location of cerebrospinal fluid ventricles and central canal of spinal cord
makes white matter "white" myelin sheaths
thick, tough most superficial meninges dura mater
major relay station for impulses going to and from the cerebral cortex thalamus
inward movement of sodium into a neuron depolarization
period when a neuron cannot accept a stimulus because it is still depolarized refractory period
middle spiderweb layer of meninges arachnoid mater
vital centers for control of heart rate, blood vessel diameter, and respiratory rate medulla
type of nerve cell found completely within the CNS interneuron
parts of peripheral nervous system spinal nerves, cranial nerves, and ganglia
2 major divisions of CNS peripheral nervous system
result of damage to primary motor area on right side of the brain inability to voluntarily move body parts on the left side
path of reflex arc sensory neuron - interneuron - motor neuron
2 neurotransmitters acetylcholine, norepinephrine
how does a signal travel across the synapse chemical
direction of travel across a synapse axon to dendrite
branch of nervous system that controls smooth and cardiac muscle, along with glands autonomic nervous system
define saltatory conduction jumping of nerve impulse from one Node of Ranvier to next
Created by: thomase
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