18 Questions
What is the primary function of the lateral rectus muscle?
Abduction of the eyeball
Which artery supplies the retina?
Central artery of the retina
Which muscle is responsible for elevation of the eyeball in the primary position?
Superior rectus
Which nerve is affected in a squint?
Abducent nerve
What is the origin of the ophthalmic artery?
Internal carotid artery
Which branch of the ophthalmic artery supplies the lacrimal gland?
Lacrimal artery
What is the primary function of the Levator Palpebrae Superioris muscle?
Elevation of the upper eyelid
What is the origin of the Superior Rectus muscle?
The common tendinous ring (ring of Zinn)
What is the term for the drooping of the eyelid?
Ptosis
Which nerve supplies the Levator Palpebrae Superioris muscle?
Oculomotor nerve
What is the insertion point of the Inferior Rectus muscle?
The sclera in front of the equator of the eyeball
What is the average distance from the cornea to the insertion point of the Lateral Rectus muscle?
6.9 mm
Which muscle is responsible for constriction of the pupil?
Sphincter pupillae muscle
Which nerve supplies the superior oblique muscle?
Trochlear nerve
Which of the following muscles is not supplied by the oculomotor nerve?
Superior oblique muscle
Which of the following is a symptom of paralysis of the levator palpebrae superioris muscle?
Ptosis
Which of the following recti muscles is not supplied by the oculomotor nerve?
Lateral rectus
Which structure does the ophthalmic artery pass through?
Optic canal
Learn about the extra-ocular muscles that control the movement of the eyelid and eyebone, including the levator palpebrae superioris and others. This quiz covers the anatomy of the orbit and its related muscles.
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