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Definition
| region in cytoplasm around nucleus of neuron |
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| action potential (another word for) |
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Definition
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Definition
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| peripheral nerves (another word for and function) |
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Definition
| nerves; axons bundled together in PNS |
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| Schwann cell (another word for) |
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Definition
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Definition
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Definition
| bundles o f neurofilaments that extend into dendrites and axon |
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| chromotaophilic substance (another word for) |
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Definition
| Nissle bodies; clusters of ribosomes that are gray in cell bodies |
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Term
| neurofilaments and neurotubules |
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Definition
| in cytoskeleton of perikaryon |
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Term
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Definition
| results when there is an unequal distribution of ions across the neurilemma |
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Term
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Definition
| connection between soma and initial segment of axon |
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Definition
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| telodendria; fine terminal extensions on end of collaterals and main trunk of axon |
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Term
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Definition
| movement of items between soma and synaptic terminal |
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Term
| terminal bouton (another word for) |
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Definition
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Term
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Definition
| group of interconnected neurons with specific functions |
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Definition
| basic "wiring pattern" found in neuronal pool |
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Definition
| spread of info from one neuron to several neurons of from one neuronal pool to several neuronal pools |
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Definition
| several neurons synapse on the same postsynaptic neuron |
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Term
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Definition
| information relayed from one neuron to another in a stepwise fashion or one neuronal pool to another neuronal pool |
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Definition
| several neurons (or neuronal pools) are processing same info at once |
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Definition
| collateral axons extend back to further stimulate presynaptic neurons |
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Term
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Definition
| collection of neuron cell bodies with a common function (in CNS) |
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Term
| nucleus (pertaining to neurons) |
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Definition
| group of "centers" with a discrete anatomical boundary |
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Term
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Definition
| portions of brain surface covered by gray matter |
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Definition
| the most complex integrating centers, nuclei and cortical areas of brain |
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Definition
| bundles of axons (white matter) in CNS what share common origins, destinations and functions |
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Term
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Definition
| large groups of tracts in spinal cord |
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Definition
| centers and tracts that link the brain with the rest of the body |
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Term
| sensory pathways (another word for) |
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Definition
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| motor pathways (another word for) |
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Definition
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Term
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Definition
| neuromuscular junction; synaptic terminal where a neuron meets skeletal muscle fiber |
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Definition
| either processes of specialized neurons or cells monitored by sensory neurons |
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Definition
| axons traveling to/from CNS |
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Definition
| includes all visceral motor neurons |
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Definition
| axons extending from CNS to ganglion (cell bodies in CNS) |
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Definition
| axons connecting ganglion cells (in PNS) with peripheral effectors |
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Definition
| Schwann cells aid in axon regeneration after injury |
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Definition
| ability of a plasmalemma to conduct electrical impulses |
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Term
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Definition
| synapse that permits communication between a neuron and another cell type |
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Definition
| example of a neuroeffector junction |
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Definition
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Term
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Definition
| ACh - neurotransmitter released at neuromuscular synapse (or junction) |
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Term
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Definition
electrical synapses
(rare)
presynaptic and postsynaptic membrane are bound tightly together at communicating (gap) junctions |
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Term
| myoneural junction (another word for) |
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Definition
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Term
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Definition
| T tubules = deep indentations in sarcoplasmal surface that conduct electrical impulses to help stimulate and coordinate muscle contractions |
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Term
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Definition
| protein filaments made of actin and myosin |
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Term
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Definition
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| myosin filaments (found in?) |
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Definition
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Definition
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Definition
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Definition
| G-actin molecules; this twisted strand makes a thin filament |
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Definition
| protein that holds F-actin string together |
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Definition
| on a G-actin globule that binds to thick filament |
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Definition
| protein that covers active sites, preventing actin-myosin interaction |
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Definition
| protein that holds tropomyosin in place |
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Definition
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Definition
| myosin heads in thick filament |
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Definition
| core within thick filament |
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Definition
| enzyme in synaptic cleft that breaks down acetylchoine |
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Term
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Definition
| chemical neurotransmitter in brain and PNS; dominant neurotransmitter in PNS, relased at neuromuscular synapses and synapses of the parasympathetic division |
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Term
| recruitment (also known as; definition) |
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Definition
| multiple motor unit summation; steady increase in muscular tension produced by increasing the number of active motor units |
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Term
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Definition
| resting tension in skeletal muscle |
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Term
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Definition
| specialized muscle cells monitored by sensory nerves that control muscle tone in surrounging muscle tissue. Play important role in reflex control of position and posture. |
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Term
| fast fibers (also known as) |
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Definition
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Term
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Definition
| reaction pathway that does not require oxygen. Converts stored glycogen to lactic acid. |
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Term
| slow fibers (also known as) |
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Definition
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Term
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Definition
| oxygen is absorbed by mitochondria to generate ATP |
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Term
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Definition
| red pigment in slow fibers; related to hemoglobin; binds oxygen molecules |
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Definition
| enlarges muscles and improves strength and endurance |
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Term
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Definition
| gaster or belly; central area of parallel type of muscle |
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