Across which thin walls is CSF absorbed into the venous circulation?
Arachnoid villi
100
Is our CSF constant or does it change depending on our position?
It changes: laying supine (7-15 mmHg), sitting or standing (-10 mmHg)
100
Where does the inferior oblique muscle move the eye and what it it innervated by?
Diagonally up and out, CN III oculomotor
100
True or false: all of the muscle of the eye come together at the annulus of zinn except for the superior oblique.
False. The superior oblique, superior retus, lateral rectus, medial rectus and inferior rectus do. The inferior oblique is the outlier
100
Which is the only cranial nerve that emerges dorsally?
CNIV trochlear nerve
200
Cranial nerve III (oculomotor) comes out between __________ and _________on the brainstem.
Posterior cerebral artery and superior cerebellar artery.
200
The mandibular division of the trigeminal nerve innervates what muscles?
Four muscles of mastication-temporalis, masseter, lateral pterygoid, medial pterygoid
2 suprahyoid muscles
Tensor tmpani (middle ear)- runs with eustation tube
Tensor veli palatinin(soft palate)
200
What is the one muscle of the tounge that is exempt from being innervated by the hypoglossal nerve?
Palatoglossus, this is innervated by the vagus nerve
200
The glossopharyngeal nerve innvervates this muscle.
Stylopharyngeus
200
Cranial nerve VI (abducens) comes out between ________ and _______ on the brainstem.
Labyrinthine artery and Anterior inferior cerebellar artery
300
Which of the cranial nerves run though the superior orbital fissure?
Cranial nerve III, IV, VI--- oculomotor, trochlear, abducens, as well as V1- the ophthalmic branch.
300
If a person is unable to shrug their shoulders, they may have damage to what nerve?
Cranial nerve XI, spinal accessory nerve
300
What are the components of the tempomandibular joint? And what kind of joint is it?
Mandibular fossa, mandibular condyle, and articular disc. It is a hinge, ball and socket, and gliding joint
300
Which muscles close the jaw? Depress the jaw? Which nerve are they innervated by?
Masseter, temporalis, medial pterygoid
Lateral pterygoid
Motor branches of V3- mandibular divison of the trigeminal nerve
300
The vagus nerve does sensory to what?
Larynx, lower pharynx, sensory ext. auditory canal, and abdominal and thoracic viscera
400
What cranial nerve gives general sensation and taste to the posterior 1/3 of the tounge?
Cranial nerve IX (glossopharyngeal)
400
The vagus nerve does motor to what?
Pharyngeal muscles (ex: stylopharyngeus -CnIX), soft palate muscles (ex: tensor veli palatini-V3), laryngeal muscles, thorasic and abdominal viscera to the left colic flexure
400
What is the only cranial nerve that crosses in the superior medullary velum?
CNIV trochlear nerve
400
Which cranial nerves run through the jugular foramen?
Cranial nerves IX, X, and XI: glossopharyngeal, vagus, and spinal accessory
400
What are the three main parts of the cranial nerve VII facial nerve
Somatic part- exits thourhg the stylomastoid foramen, enters parotid gland, divides into (temporal, zygomatic, buccal, mandibular, cervical) it also supplies the stapedius.
Chorda tympani – sensory does anterior 2/3 of tounge taste, motor to submandibular and sublingual glands to increase secretion
Greater petrosal- to lacrimal gland and mucus glands of nasal cavity to increase secretion
If you are trying to sneak a peek without turning your head to the person sitting directly to the left of you, what muscle are you using in your right eye?
Medial rectus
500
What are the three division of the trigeminal nerve and what do they innervate?
Opthalmic (V1)- forehead and scalp, skin over nose, upper eyelid, conjunctiva and sclera
Maxillary (V2)-middle face, anterior temple, sides of the nose and upper lip, nasal cavity, soft and hard palate, upper row of teeth and gums
Mandibular (V3)- posteiro temple, skin over the chin and jaw and lower lip, anterior 2/3 of tongue, lower row of teeth and gums, TMJ
500
What nerve or muscle could be injured if we are unable to open our eyelid?
CN III oculomotor or levator palpebrae superioris
500
What nerve emerges from the pontomedullary groove?