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Definition
-nerve cell
-building block of nervouse system |
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Term
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Definition
| -receives messages from other cells. branch extentions of the cell body |
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| passes messages away from cell body to other neurons, cells, or glands(tail) |
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| fatty tissue layer segmentally encaseing the axon, helps messages send faster |
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| neural impulse. brief electrical charge traved down an axon. + atoms in and out of channels in axon membrane |
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| level of simulation required to trigger a neural impulse |
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| junction b/w axon tip of the sending neuron and the dendrite or cell body of recieving neuron. (synaptic gap or cleft) |
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Definition
| chemical messangers that traverse the synaptic gaps between neurons. when released by sending N, neurotransmitters travel across synapse adn bind to receptor sites of recieving N. influences if that N will generate a neural pulse |
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Term
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Definition
-enables muscle action, learning, and memory
-lack= alzheimers |
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Term
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Definition
-motor movement, alertness
-lack=parkinsons
-abundance=schizophrenia |
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Term
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Definition
-pain control
-involved in addictions |
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Definition
-mood control
-lack=clinical depression |
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Definition
-alertness, arousal
-undersupply=can depress mood |
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Definition
| enables brain to keep harmful chemicals out-dope |
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Definition
| arrive at brain (from senses to brain) |
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Definition
| exits the brain (from brain to senses |
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Definition
| the devision of peripheral nervous system that controlls the bodys skeletal muscles (skeletal nervous system) |
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Definition
| the part of the peripheral nercous system controlling glands and muscles of the internal organs |
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Term
| sypathetic nervous system |
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Definition
| division of autonomic system that arouses the body, mobalizing energy in stressful situations |
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Term
| parasympathetic nervous system |
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Definition
| division of the autonomic system that calms the body conserving its energy |
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Definition
| simple, automatic movement |
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Definition
| bodys slow chemical communication system. set of glands secreting hormones into the bloodstream |
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Definition
| secretes hormones, some affect other glands |
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Definition
| helps regulate level of calcium in the blood (ES) |
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Term
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Definition
| medulla helps triggal fight or flight (ES) |
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Definition
| regulates level of sugar in blood (ES) |
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Definition
| secretes female/male sex hormones (ES) |
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Definition
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Term
| electroencephalogram (EEG) |
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Definition
| records waves of electrical activity sweeping brains surface. measured by electrodes on the scalp |
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Term
| PET (positron emission tomography) scan |
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Definition
| visual display of brain activity detecting where radioactive forms of glucose goes whil brain performs a task |
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Term
| MRI (magnetic resonance imaging) |
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Definition
| uses magnetic fields and radio waves to produce compter generated images to distinguish among different types of soft tissue to see brain structures |
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Definition
| reveales blood flow and brain actuvuty by comparing successive MRI scans. shows brain function |
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Definition
-base of brainstem
-heartbeat and breathing |
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Definition
-nerve network in the brainstem
-arousal and alertness |
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Term
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Definition
-senesory switchboard
-top of brainstem
-directs messages to senseory recieving areas |
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Definition
-little brain
-rear of brainstem
-movement and balance |
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Term
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Definition
-donut shaped system of neural structred as border of the brainstem
-ass. with emotions like fear, aggression, and food and sex drives |
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Definition
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Definition
-below the thalamus (HYPO=BELOW)
-linked to emotion, temperature, drinking, hunger, sex drive etc. 4 F's |
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Definition
-covers the brain
-ultimate control and information processing center |
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Term
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Definition
| -cells in the nervous system taht support, nourish, and protext neurons (Body guard) |
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Definition
-behind forehead
-speaking adn muscles movements, making plans adn judgements
-FRONT of decissions |
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Definition
-top of head
-touch body possition, sensations |
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Definition
-back of head behind ear
-visuals, eyes opposite side of brain |
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-in front above ear(tempals)
-auditory, ears, opposite ear opposite brain |
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-rear of frontal lobes
-volentary motor movement |
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Definition
-front of parietal lobe
-registers touch sensations adn movement senseations |
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Term
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Definition
-areas of cereberal cortex not involved in promary motor or sensory functions
-higher mental fuctuins (learning, remembering, thinking, and speaking) |
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Term
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Definition
| -impairment of language caused by L hemisphere damage to broca or wenickes areas |
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Term
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Definition
-Frontal Lobe (usually L side)
-ability to MAKE speech |
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Definition
-Temporal lobe (usually L side)
-understand speech |
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Term
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Definition
| -allows modification to the brain in event of damage |
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