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Destiny Quinteros, Per.2 Nervous System - Coggle Diagram
Destiny Quinteros, Per.2 Nervous System
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Cranial nerves
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- Contain: sensory & motor nerve fibers
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- Others are primarily motor
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- MUST ARISE FROM BRAINSTEM
Spinal nerves
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- First pair are mixed nerves
Numbered In sequence:
- 8 pairs of cervical nerves
- 12 pairs of thoracic nerves
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- 1 pair of coccygeal nerves
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Neurotransmitters
- Released in response to nerve impulse
- diffuse across cleft & bind to receptors on membrane of postsynaptic neuron
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- Include: ace-tycholine, amino acids, & neuron-peptides
- Action: depends on type of receptors in specific synapse
- Some neurons produce one type of neurontransmitter, others produce two or three
- major actions of acetylchline, norepinephrine, and epinephrine
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