BIOL301 Study Guide - Final Guide: Osteoclast, Earwax, Pubic Symphysis
13 Dec 2015
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Fibroblasts, macrophages, mast cells, proteins (collagen) & other white blood cells. 2 plexuses (network of vessels) to provide blood & regulate temperature: dermis plexus made of 2 layers, papillary layer deep to stratum basale of epidermis. Finger-like projections of dermis into epidermal layer. Most abundant epidermal cell connected via desmosomes: reticular layer deep to papillary layer. Thick & forms network of dense/irregular tissue: hypodermis sub papillary plexus. Composed of areolar & adipose connective tissue. Subcutaneous tissue superficial fascia (under the skin) Fascia: connective tissue layer to move over deeper areas of body. Structures derived from epidermis & extend into dermis. Hard plate surrounded on 3 sides (nail folds) Formation of nail plate comes from dividing cells proximal to the nail (nail matrix) Free edge (off of skin), body & root. From invaginations of the epidermis forming the follicle. Raised by bands of smooth muscle: arrector pilli . 2 parts dead keratinized cells projecting from skin"s surface: shaft .
