KAAP220 Lecture Notes - Lecture 6: Bone Density, Keratinocyte, Sunscreen
6 Mar 2018
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Lecture 6: chapter 5 continued, exam will have more pictures than the quizzes, sensory receptors in the dermis (there are more in the dermis than epidermis, meissner corpuscles (in papillary layer) Assessed with a pin - if painful to prick, it must be 2nd degree; if it"s not, it must be 3rd degree (loss of sensation) Autograft - from that person"s own undamaged skin - best choice if possible, no rejection by immune system. Allograft - frozen skin from a cadaver; can be rejected. Sweat glands - assist in thermoregulation and excrete wastes. Declining numbers of dendritic cells (to about half of levels at age 21) Increased change of skin damage and infection: diminished immune response, thinning dermis, decreased perspiration - sweat glands are less active, which affects thermoregulation, and there"s. Like blister repair takes 3-4 weeks in young adult, takes 6-8 weeks in 65-75 year olds.
