Cranial Nerves Flashcards
where are sensory ganglia located
outside brainstem
where are the motor neuron cell bodies located
nuclei of brainstem
CN 1
olfactory
smell, sensory
only in CNS
CN 2
-optic
-vision; afferents for pupillary and accommodation reflexes
-sensory
CN 3
-oculomotor
-motor
-moves eye up and down, medially. raises upper eyelid. efferent response
-constricts pupils, adjusts shape of lens of the eye
CN 4
-trochlear
-motor
-moves eye down and medially
CN 5
-trigeminal
-sensory and motor
- chewing. somatosensation from face
CN 6
-abducens
-motor
CN 7
-facial
-motor and sensory
-involved in parasympathetic: tears and salvation
CN 8
vestibulocochlear
-sensory
CN 9
glossopharyngeal
-motor and sensory
-parasympathetic involvement in salvation
CN 10
-vagus
-sensory and motor
CN 11
accessory nerve
-motor to SCM and traps
CN 12
-hypoglossal
-motor, moves tongue
what receptors go to the olfactory bulbs
nasal chemoreceptors
why is there an emotional response to odors
olfactory tract travels to amygdala which is connected to emotions
visual information travels from what cells
photoreceptor cells
what muscle does trochlear innervate
superior oblique muscle
superior oblique motion
contributes abduction, depression, and intorsion
what is the only cranial nerve exits the brainstem dorsally
trochlear, CN 4
