Term
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Definition
- large change in membrane potential
- travels through the length of the cell until it reaches the end, no matter the distance
- example: a neuron's axon can be several feet long and action potentials travel the entire distance to communicate electrical signals
- occur only in neuronal axons, skeletal muscle cells, and a few other excitable cells
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Term
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Definition
- critical electrical point that must be crossed
- about 15 to 20 mv above resting membrane potential
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Term
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Definition
- neurons that have an even faster method of transmitting an action potential
- means to jump from place to place
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Term
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Definition
- the minute collar of unwrapped space between adjacent cells sausages where the axon is naked
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Term
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Definition
- a cite where electrical signal passes from one cell to the next
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Definition
- where the ion carrying the action potential starts
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Term
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Definition
- Where it goes after the gap junction
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Term
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Definition
- gap junctions between two adjacent muscle cells
- in the uterus
- enable to action potential to pass directly from the upper cell into the lower cell
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Definition
- cells are not physically linked
- cells are separated by thin synaptic cleft
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Term
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Definition
- packed with neutrotransmitters
- on the other side of synaptic cleft
- cell membrane of the post synaptic cell contains numerous proteins receptors that bing the neutrontransmitter
- fuse with cell membrane and the neurotransmitters are released into the synaptic cleft
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Term
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Definition
- stronger sensory input
- will be signalled by very frequent action potentials
- stronger=more
- weaker=less
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