The Eye - consists of lacrimal gland & ducts that drain...

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The Eye & Vision - vision is the dominant sense (~ 70% of sensory receptors in the body are in the eyes) - accessory structures of eye: eyebrows : short coarse hairs at supraorbital margins; movement of this region is eyelids (palpebrae): thin skin covered folds of epithelium supported by connective tissue; contraction of the orbicularis oculi contraction of the levator palpebrae superioris opens eyelids o desiccation (drying) with secretions conjunctiva: transparent mucus membrane that lines the eyelids ( palpebral conjunctiva bulbar conjunctiva ) o bulbar conjunctiva only covers sclera (white of eye), not cornea lacrimal apparatus:
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Unformatted text preview: consists of lacrimal gland & ducts that drain lacrimal secretions into the nasal cavity o lacrimal gland: lies within the orbit above the eye; releases a lacrimal secretion (tears) containing mucus, antibodies & the enzyme lysozyme (kills bacteria) Kevin Kelleher, MTC Biology 210 Study Notes Exam 4 24 o secretions travel through the lacrimal canals to the lacrimal sac, & then into the nasolacrimal duct into the nasal cavity extrinsic eye muscles: o lateral rectus: moves eye laterally (control by CN VI) o medial rectus: moves eye medially (control by CN III) o superior rectus: elevates eye (control by CN III) o inferior rectus: depresses eye (control by CN III) o inferior oblique: elevates eye & turns it laterally (control by CN III) o superior oblique: depresses eye & turns it laterally (control by CN IV)- structure Page3...
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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The Eye - consists of lacrimal gland & ducts that drain...

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