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What is the functional unit of the system?
What is it's anatomical parts of neuron and what are their functions?
- Cell Body--> metabolism
- Dendirite--> Carry info toward cell body
- Axon--> carry info away from cell body
- Axon Terminal--> contains neurotransmitter (NT)
3 Functional types of neurons, alternate names, and functions?
--> receptor that responds to stimulus
--> carries out response
- Association--> located between Sensory & Motor
- --> higher functions
What reproductive ability do neurons have?
Requirements for Axon Regeneration
- Peripheral location
- cell body intact & functioning
- unobstructed path
What are tissue type, reproductive ability, and functions of neuroglial cells?
- --> connective tissue
- --> can reproduce
- -->supports & protects neuron & mylein sheath insulates neuron
What is Action Potential?
Action potential is a change in potential that occurs if the membrane is depolarized from resting to threshold potential
Action Potential role is?
In order parts of Action Potential are:
- Depolarization--> potential becomes more + high sodium inflow
- Repolarization--> potential is more - due to Potassium out flow
- Hyperpolarization--> potential is less than resting
- Return to resting--> due to Sodium/Potassium pump
2 types of electrical transmission?
Continuous & Saltatory
List types of neurons in which electrical transmission occur & describe process involved in transmission for each & tell which is faster & why?
- Continuous--> have unmyelinated fibers & action potential at all locations (proximal -> distal)
- Saltatory--> myelinated fibers & action potential at nodes of Ranvier--> faster becase of myelinated
Define synapse & neurotransmitter
- Synapse--> is site of chemical transmission between a neuron and another structure
- Neurotransmitter (NT)--> carries out the chemical transmission.
What must happen to neurotransmitter after it's had it's effects?
it must be removed