Control & Coordination of Eye Movement
CN: Somatosensation of the Head
CN V - Trigeminal [Somatosensation of Head]
CN IX - Glossopharyngeal [Somatosensation of Head]
CN X - Vagus [" "]
100
Which 3 CN are involved in eye movement?
CN III, IV, and VI. Oculomotor, Trochlear, and Abducens.
100
These 3 CN provide head somatosensation not covered by the spinal nerves.
CN V trigeminal, CN IX glossopharyngeal, CN X vagus.
100
Attaches to the _____.
CN V attaches to the PONS.
100
CN IX attaches to the ________.
MEDULLA
100
CN V, IX, and ___ contribute to somatosensation of the head.
CN X, vagus.
200
CN III, IV, and VI are motor nuclei are interconnected via the __________.
MEDIAL longitudinal fasciculus.
200
Trigeminal, glossopharyngeal, and vagus nerves are involved in somatosensation of the head and are characterized as ____________.
General Somatic Afferent.
200
Consist of 3 branches, _______________, with cell bodies in the TRIGEMINAL GANGLION.
(1) opthalamic (2) maxillary (3) mandibular
200
CN IX provides somatosensation from (superficial/deep) structures of the head. [choose]
CN IX provides somatosensation from DEEP structures of the head.
200
CN X - Vagus attaches to the ______.
MEDULLA
300
This structure assists in the coordination of eye movement.
Reticular Formation
300
Each CN contributes to the same type of somatosensation as the spinal somatosensory nerves, which are _________.
Touch, proprioception, pain, temperature.
300
CN V provides proprioception from 3 groups of muscles.
(1) jaw muscles (2) tongue muscles (3) eye muscles
300
Glossopharyngeal provides somatosensation from __________ of the tongue (not taste)
Posterior 1/3 (remember, trigeminal takes care of anterior 2/3).
300
Vagus provides __________ from deep structures of the head.
Somatosensation
400
Frontal eye field - part of premotor complex - provides _____________.
Voluntary control of eye gaze.
400
Once the CN enters the brainstem, ascending pathways merge for touch and proprioception, CN ____.
CN V - Trigeminal
400
CN V also provides info about deep structures of the head, including __________.
(1) oral/nasal mucosa (2) teeth (3) tongue (anterior 2/3)
400
Oropharyngeal mucosa (gag reflex)
Glossopharyngeal nerve provides somatosensation from this deep structure.
400
Laryngeal/pharyngeal mucosa (think "sore throat").
Somatosensation provided by CN X - vagus.
500
_________ aids the frontal eye field.
Parietal eye field, located on superior parietal lobule "where am I?"
500
Once each CN enters the brainstem, ascending pathways merge for pain & temperature, CN _____.
CN IX glossopharyngeal & CN X vagus
500
Primary Somatosensory Branch
CN V Trigeminal - branch involved in somatosensation of the head.
500
Along with CN VII, CN IX provides somatosensation from _____.
The ear and ear canal. Think "earache".
500
Wanderer.
CN X - vagus. (Wanderer is also the initial name of the Host in Stephanie Meyer's book The Host...later shortened to Wanda.)
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