Musculus rectus superior

The video tutorial explains the rectus superior muscle, one of the six outer eye muscles responsible for eye movements such as adduction, internal rotation, and elevation. It distinguishes between adduction and internal rotation, describes the muscle's origin at the annulus tendinosis communis, and details its blood supply from the anterior ciliary artery. The tutorial also covers the nerve innervation by the oculomotor nerve and discusses the potential impact of orbital trauma on structures passing through the superior orbital fissure.

What is the primary function of the rectus superior muscle?

• To maintain the shape of the eyeball

• To regulate the blinking reflex

• To assist in the adduction and elevation of the eye

• To control the dilation of the pupil

Where does the rectus superior muscle originate?

• From the cornea

• From the annulus tendinosis communis

• From the sclera

• From the iris

What is the significance of the Zins Ring in eye anatomy?

• It is a part of the retina

• It is a muscle that controls eye color

• It is named after a botanist and surrounds the optic nerve

• It is a nerve that controls eye movement

Which artery provides blood to the rectus superior muscle?

• The anterior ciliary artery

• The central retinal artery

• The posterior ciliary artery

• The lacrimal artery

Which nerve is responsible for the innervation of the rectus superior muscle?

• The optic nerve

• The abducens nerve

• The trochlear nerve

• The oculomotor nerve