Exam 2 Flashcards
(148 cards)
Levator Palpebrae Superioris
Innervation: CNIII (superior)
Action: Raises eyelid
Superior rectus
Innervation: CN III, Superior
Action: Elevates, Adducts eye (medial rotation)
Medial Rectus
Innervation: CNIII, Inferior
Action: Adduct eye
Inferior Rectus
Innervation: CNIII, inferior
Action: Depresses, adducts eye (lateral rotation)
Lateral Rectus
Innervation: Abducent (VI)
Action: Avducts eye
Inferior Oblique
Innervation: CN III, inferior
Action: Elevates, abducts, and laterally rotates
Superior Oblique
Innervation: Trochlear (IV)
Action: Depress, abduct, medially rotates
Ophthalmic artery
From: Internal Carotid
CLP SAP DS
Central Artery of Retina
Lacrimal Artery
Posterior Cilliary
Supraorbital
Anterior Ethmoidal
Posterior Ethmoidal
Dorsal Nasal
Supratrochlear
Cilliary Muscle:
Innervation: Parasympathetics from CNIII
Action: Controls shape of lens
Far: Flat lens
Close, thick lens
Cilliary Process:
Produce aqueous humor
Canal of Schlemm
Covered by endothelium, receives aqueous humor from Anterior chamber via Trabeculae
Opthalmic Nerve
V3, from Trigeminal NFL Nasociliary Frontal Lacrimal
Frontal Nerve
From: Opthalmic nerve
Supratrochlear (medial)
Supraorbital (lateral)
Glaucoma
Blockage of Trabeculae leading to no aqueous fluid moving into canal of Schlemm. Vision impaired by pressure on retina.
Open angle: Blockage
Close angle: Blockage by iris.
Cataracts:
Clouding of the lens
Postremal Champer
Filled with vitreous humor.
Fovea
Center of visual axis, only cones, no blood vessels.
Optic disc
No photoreceptors, blind spot.
Papilledema
Increase in CSF pushes on back of optic disc, causing it to bulge.
Superior Constrictor
Innervation: Vagus (X)
Action: Swallowing
Middle Constrictor
Innervation: Vagus (X)
Action: Swallowing
Inferior Constrictor
Innervation: Vagus (X)
Action: Swallowing
Stylopharyngeus
Innervation: CN IX
Attachment: thyroid
Salpingopharyngeus
Innervation: X