Chp 2 Flashcards
two divisions of the peripheral nervous system
somatic and autonomic
somatic nervous system
consists of nerves that interconnect the brain and major muscles and sensory systems of the body
autonomic nervous system
consists of he nerves that connect to the viscera
two divisions of somatic nervous system and how many of each?
cranial nerves and spinal nerves
12 PAIRS of cranial nerves and 31 PAIRS of spinal nerves
cranial nerve 1
olfactory (smell)
sensory
cranial nerve 2
optic (vision)
sensory
cranial nerve 3
oculomotor (moves eye)
motor
cranial nerve 4
trochlear (moves eye)
motor
cranial nerve 5
trigeminal (face, sinuses, e teeth), sensory
AND
jaw muscles, motor
cranial nerve 6
abducens (moves eye)
motor
cranial nerve 7
facial (tongue, palate, facial muscles, salivary glands, tear glands)
sensory and motor
cranial nerve 8
vestibulocochlear (hearing and balance)
sensory
cranial nerve 9
glossopharyngeal
(taste and mouth sensations), sensory
(throat muscles) motor
cranial nerve 10
Vagus (internal organs/viscera)
sensory and motor
cranial nerve 11
spinal accessory (neck muscles) motor
cranial nerve 12
hypoglossal (tongue muscles)
motor
motor fibers project from the __ part of the spinal cord
ventral
sensory fibers enter from the __ part of the spinal cord
dorsal
what are the 5 divisions of the spinal cord (top to bottom)
cervical thoracic lumbar sacral coccygeal
How many pairs of nerves are in each of the 5 divisions of the spinal cord
8 cervical 12 thoracic 5 lumbar 5 sacral 1 coccygeal
two divisions of the autonomic nervous system and what they do
sympathetic (fight or flight)
parasympathetic (rest and digest)
the sympathetic nerves come from the __ regions while the parasympathetic nerves come from the __ regions
middle; top and bottom
ridges of the cerebral cortex
gyri (gyrus)
crevices of the cerebral cortex
sulci (sulcus)
