Flashcards in nervous system Deck (12)
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1
what are the functions of the nervous system?
communication, regulating internal events, organising behaious(external), info storage, sensations, perceptions, emotions
2
what are glia?
more numerous than neurons, supportive and nutritive
3
what cells are involved in myelin formation in CNS & PNS?
PNS-schwann cells
CNS - oligodendrocytes
4
what constitutes PNS?
spinal and cranial nerves
5
what constitutes the CNS?
spinal cord and brain
6
what well defined part of the body do sensory axons(nerves) supply?
dermatomes- on body surface
7
what well defined part of the body do motor axons supply
myotomes-blocks of muscle
8
what are nerve plexuses?
peripheral nerves supply particular regions of the body, axons in spinal nerves form various peripheral nerves
9
what cranial nerve is distributed to the trunk?
vagus
10
what is the function on peripheral nerves?
carry info to and from CNS
11
what do afferent (sensory) nerves do?
carry info to CNS, associated with sensations/perceptions except from viscera
12
