PSY 166 Lecture 20: Touch
8 Jan 2019
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Document Summary
Chemical acids or bases, spicy foods (chemicals in the food that interact with receptors and cause the hot sensation) Inflammatory pain damage to tissues or joints. Neuropathic pain damage to nerves rather than (nerves are bundles of axons) soft tissue (overstimulate a nerve [typically a nerve is being pinched] and get pain) Is a protective covering made of dead skin cells and a few receptors. Dermis live skin layer, most mechanoreceptors are here. Subcutaneous fat sub means below and cutaneous means skin. So, this is a fat layer below the skin to keep us warm. Duct of sweat gland keeps us cool. If you scrape your hand, you scrape off some dead skin cells, and that is the epidermis. Sometimes you scrape it and see some redness and a little blood. You got to the top edge of the dermis. If you actually cut yourself, then you cut into the dermis. 4 types of mechanoreceptors difference in shapes affects function.
