ANP 1106 Lecture Notes - Lecture 17: Levator Palpebrae Superioris Muscle, Zonule Of Zinn, Medial Rectus Muscle

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Joanne Savory

Document Summary

Coarse hairs that overlie the supraorbital margins of the skull. Shade the eyes from sunlight and prevent perspiration from reaching the eyes. Tarsal plates of connective tissue support the eyelids internally. Levator palpebrae superioris gives the upper eyelid mobility. Covers the whites of the eyes as the ocular conjunctiva. Conjunctivitis: inflammation of the conjunctiva results in red and irritated eyes. Consists of lacrimal gland and associated ducts (secrete tears) Enter the eye via superolateral excretory ducts, exit medially via lacrimal punc- tum. Allow eyes to follow a moving object, help maintain shape of eyeball and hold in or- bit. Vision is our dominant sense, with 70% of all sensory receptors belonging in the eye. Nearly half of the cerebral cortex is involved in some aspect of visual processing. Six traplike extrinsic eye muscles control the movement of each eyeball. They originate from the walls of the orbit and insert into the outer surface of the eyeball.