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NERVOUS SYSTEM #1 - (copy)
VOCABULARY
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| A | B |
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| 2 divisions of nervous sys | C.N.S & P.N.S |
| 2 parts of C.N.S | brain and spinal cord |
| 2 divisions of P.N.S. | somatic & autonomic nerves |
| 2 divisions of somatic | sensory & motor |
| 2 divisions of autonomic | sympathetic, parasympathetic |
| neurons | cells that conduct n impulses |
| 3 types of neurons | sensory,inter,motor |
| sensory neurons | carry impulses to C.N.S |
| interneuron | carry impulses within CNS |
| motor neuron | impulses from CNS to effector |
| dendrites | carry impulses to cell |
| axons | carry impulses from cell |
| myelin sheath | fatty covering of axis |
| node of Ranvier | gaps between sections of myelin sheath |
| Schwann cells | make myelin sheath |
| neurilemma | membrane surrounding axon |
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