Week 3 Flashcards
Arrange these bones from anterior to posterior: Lacrimnal Ethmoid Nasal Lesser wing of sphenoid
Nasal
Lacrimnal
Ethmoid
Lesser wing of sphenoid
What passes through the optic foramen?
Optic nerve
Opthalmic artery
What passes through the superior orbital fissure?
Cr. N. III - Occulomotor
Cr. N. IV - Trochlear nerve (superior oblique)
Cr. N. V - V1 branch of trigeminal
Cr. N. VI - Abducens nerve (lateral rectus)
Superior opthalmic veins
What passes through the inferior orbital fissure?
Cr. N. VII - maxillary branch of the facial nerve
Inferior opthalmic veins
Outer layer of the orbit?
Fibrous: Sclera, Cornea
Middle layer of the orbit?
Vascular: Choroid, Ciliary body, Iris
Inner layer of the orbit?
Nerve: Retina
Name of fluid in the anterior segment of the eye?
Aqueous humour
Name of fluid in the posterior segment of the eye?
Vitreous humour
What are the intrinsic muscles of the eye?
Ciliaris
Constrictor
Dilator
What are the extrinsic muscles of the eye?
Superior rectus Inferior rectus Medial rectus Lateral rectus Superior oblique Inferior oblique
What is the eyelid muscle called?
Levator palpebrae superioris
Which is the only muscle that does not arise from the posterior aspect of the orbit?
Inferior oblique
Opthalmic artery is a branch of which artery?
Internal carotid artery
Secretion of the parotid gland?
Serous
