BIOL 1117 Study Guide - Midterm Guide: Subcutaneous Tissue, Acid Mantle, Adipose Tissue
9 Jan 2019
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Functions of the skin (6 functions in mammalian skin: resistance to trauma and infection (and recovery) Increases durability and impermeability: keratin is packed into epidermal cells that are linked togethery by desmosomes. + , and some nacl remain in the sweat: most nacl is reabsorbed as secretion passes through duct, sweat is 99% water (on average), with ph range of 4-6 (slightly acidic antibiotic) Sebaceous glands: sebum: oily secretion produced by sebaceous glands, flask-shaped glands with short ducts opening into hair follicle: reaches the surface via hair follicle, sebum keeps the skin adn hair from become dry, brittle, and cracked. Mammary glands: milk producing glands, develop in female breast only during pregnancy and lactation. Bones and osseous tissue: bone (osseous tissue): connective tissue w/ matrix hardened via mineralization, mineralization: hardening matrix w/ calcium phosphate and other minerals, calcification: hardening of bone tissue by calcium salt deposition.
