HI310 Lecture 5: Chapter-10-The-Sensory-System
24 Jan 2019
Department
Course
Professor
Document Summary
A special sense is localized in a special sense organ; a general sense is widely distributed throughout the body. Special senses: vision from receptors in the eye, hearing from receptors in the internal ear, equilibrium from receptors in the internal ear, taste from the tongue receptors, smell from receptors in the upper nasal cavities. General senses: pressure, temperature, pain, and touch from receptors in the skin and internal organs, sense of position from receptors in the muscles, tendons, and joints. A thin membrane, the conjunctiva, lines the inner surface of the eyelids and covers the visible portion of the white of the eye (sclera). Cells within the conjunctiva produce mucus that aids in lubricating the eye. Where the conjunctiva folds back from the eyelid to the anterior of the eye, a sac is formed. The lower portion of the conjunctival sac can be used to instill drops of medication.
