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19 Cards in this Set
- Front
- Back
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Identify the three parts of an neuron |
Dentrite, Soma, Axon |
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Function of the soma |
Receives info from dendrite and if is stimulated will send in for to the axon |
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Function of axon |
Transmits information away |
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Types of Neurons |
Sensory Interneurons Motor |
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Function of Sensory neurons |
Sends info to central nervous system (brain + spinal cord) |
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Function of interneurons |
Connectors. Connects sensory and motor neurons |
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Function of Motor neurons |
Sends info from central nervous system to muscle glands and other parts of your body |
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Myelin sheath |
Responsible for velocity and electric current |
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Process of Depolarization |
1. Doors open 2. Sodium (Na+) rushes in 3. The inside is more positive in regards to the outside |
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What happens during the Resting state |
1. Ion channels closed 2. Abundance of sodium outside 3. Internal charge appear more negative in regard to the outside |
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Process of repolarization |
The gates open & potassium ions flow out allowing it to repolarize and it returns to the resting state |
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All or nothing principal |
You either depolarize or you don't |
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Absolute refractory period |
Period of time where no matter how strong the stimulus nothing will happen. This is during the time of repolarization |
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Neurotransmitters |
Messages between neurons is carried chemically the chemical is called neurotransmitters |
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Two main types of neurotransmitters |
1. Inhibitory 2. Excitatory |
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Inhibitory neurotransmitters |
When threshold is reached depolarization stops |
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Excitatory neurotransmitters |
Increases the likely hood of depolarization |
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Primary function of acetylcholine |
Transmit movement from nerves to muscles |
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Enzyme used to break down acetylcholine |
Acetylecholinesterase |
