ANP 1106 Study Guide - Midterm Guide: Vasoconstriction, Stratum Spinosum, Macrophage

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1106
• Professor: Jacqueline Carnegie

Document Summary

2. 1 describe the layers of the epidermis and the cells that compose them: these are skin and derivatives (sweat and oil glands, hair, nails) The structure of skin: 2 distinct regions: epidermis (superficial, epithelial layer: thick, keratinized stratified squamous epithelium) and dermis (ct, epidermal cells (4 types), keratinocytes: The main function of keratinocytes is to produce keratin. The lifespan of a keratinocyte is 25-40 days: melanocytes: Produce melanin; deepest layer of epidermis; numerous branching processes for melanin transfer to adjacent cells. Function: protect the dna from the uv rays. What is the hypodermis: superficial fascia, subcutaneous tissue, areolar ct + blood vessels & adipose tissue, anchors skin to underlying structures with ability to slide, shock absorber & insulation, stores fat. & waterproofing; bactericidal: whitehead is sebum in sebaceous glands, blackhead is oxidized sebum in sebaceous glands, acne is a bacterial infection of the sebaceous glands.