BSC 109 Lecture Notes - Lecture 12: Far-Sightedness, Retina, Mechanoreceptor

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 109
• Professor: Audrey Hicks

Document Summary

Core temperature receptors do not adapt quickly: respond to tissue damage or excessive heat or pressure, signal discomfort, unencapsulated nerve endings respond to injury from excessive pressure, heat, light, or chemicals, fast pain (acute, sharp) Originates in muscles or internal organs: referred pain: may be perceived as originating in a different area of the body, pain receptors do not adapt, chemoreceptors, respond to presence of chemicals, taste: bind with dissolved substances. Taste categories: sweet, salty, sour, bitter back of tongue cannot bypass them, umami, smell: bind with odorants. Some receptors adapt to continuing stimuli: sensory adaptation, sensor neuron stops sending impulses even though the original stimulus is still present, allows the cns to concentrate on important stimuli and ignore noncritical ones to maintain homeostasis, receptors that adapt, light touch, pressure, and smell, receptors that do not adapt, pain, joint, and muscle monitoring receptors.