KNES 191B Lecture Notes - Lecture 14: Vitreous Body, Inferior Rectus Muscle, Superior Rectus Muscle
16 Aug 2016
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Document Summary
Our vision exists inside our visible spectrum of light: wavelengths from about 400 to 700 nm. Wavelength: distance between two consecutive peaks in an electromagnetic wave. Roygbiv: red, orange, yellow, green, blue, indigo, violet. Accessory structures: eyelids & eyelashes: protects from particles, eyebrows: protection from sweat, lacrimal apparatus: produces tears to hydrate eye (keeps eye moist), extrinsic eye muscles: extraocular eye muscles; control eyeball movement in all directions. Medial rectus: closest to the midline of the body. Lateral rectus: lateral to the midline of the body. Inferior oblique: palpebral muscles: control eyelid movement. Close the eyes and protect them from external damage: conjunctiva: thin protective mucus membrane that lines eyelids and covers the sclera, tarsal plate: a fold of connective tissue that gives the form to the eyelids. Contains sebaceous glands to secret mucus; protects the eye from particulates. Eye boogers are the particulates collected by the mucus secreted by the sebaceous glands of the eyelid.
