KAAP309 Lecture Notes - Lecture 3: Lamellar Corpuscle, Merkel Cell, Finger Tips
5 Sep 2019
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Document Summary
Functions of skin: protection, chemical barrier i. Low ph- no bacteria: physical barrier i. ii. The thicker the skin the stronger it"ll be: biological barrier. Dendrites i: macrophages, helps immune system, temperature regulation, cutaneous sensation, exteroceptor (respond to external stimuli, m erkel receptor, light pressure, finger tips, lips, facial skin, m essiner"s corpuscles, light pressure, vibration iii. Pacinian corpuscles: deepest found in subcutaneous fat layers, deep pressure iv. v. Free nerve endings: pain, found everywhere and anywhere, metabolic, blood reservoir, excretion. Skin varies from 1. 5 - 4. 0+ mm in thickness: epidermis, epithelial cells, no blood, dermis, dense connective tissue, hypodermis* not technically skin, adipose and areolar connective tissue. Keratin is a protein with protective properties. Whole new set 25-40 days- every month you have a whole new layer of skin. Synthesize pigment (melanin); found in deepest layer. Layers of epidermis (superficial to deep: stratum corneum [come, horny layer, 20-30 layers i.
