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46 Cards in this Set
- Front
- Back
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neuron |
a nerve cell - basic building block of the nervous system |
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dendrites |
brushy fibres that receive info and conduct it towards the cells body |
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axon |
lengthy but that passes the message on received from the dendrites |
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myelin sheath |
axons are covered by this fatty tissue |
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glial cells |
worker bees - provide nutrients |
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action potential |
brief electrical charge down the axon |
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refractory perios |
period of inactivity after a neuron has fired |
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threshold |
level of stimulation required to trigger a neural impulse |
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synapse |
the meeting point between neurons |
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reuptake |
reabsorption of sending neurons |
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endorphins |
neurotransmitters linked to pain control and pleasure |
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agonist |
increase neurotransmitter actions |
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antagonist |
decrease |
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nervous system |
the bodys speedy electorchemical communication network |
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CNS |
brain and spinal cord |
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PNS |
responsible for gathering information and transferring the CNS decisions |
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Nerves |
cable formed by bundles of axons that connects the CNS |
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motor neurons |
outgoing info from brain to spinal cord |
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peripheral nervous system includes |
somantic autonomic |
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somantic nervous system |
includes sympathetic and para |
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autonomic ns |
controls glands and muscles |
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interneurons |
neurons within the brain |
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reflex |
simple automatic response to sensory stimulus |
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endocrine system |
the body's slow chemical communication system |
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adrenal glands |
arouse the body in times of stress |
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pituitary gland |
aka aster gland regulates grow and controls other endocrine glands |
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lesion |
destruction of brain tissue |
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EEG |
records brainwaves sweeping across the brains surface |
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MRI |
magnetic fields and radiowaves to produce image |
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fmri |
tracks radioactive glucose to show brain activity |
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pet |
detects radioactive glucose |
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brainstem |
controls survival functions |
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medulla |
base of brainstem that controls heartbeat and breathing |
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thalamus |
sensory control centre |
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reticular formation |
arousal - nerve network from brainstem into thalamus |
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cerrebellum |
little brain @ rear of brainstem |
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limbic system |
emotions and drive has hippocampus and neural clusters |
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hippocampus |
process explicit memories and storage |
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neural clusters |
linked with emotion |
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hypthalamus |
below thalamus - controls the maintenance stuff |
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motor cortex |
controls voluntary movement |
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cerebral cortex |
control information processing |
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frontal lobes |
speaking judgement plans |
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parietal lobes |
receives sensory input from touch and body position |
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temporol lobes |
ears receive info |
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somatosensory cortex |
touch and movement sensations |
