ANP 1106 Lecture 2: Lecture 02 Integumentary system

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

Document Summary

Stratum corneum: outermost layers that has large amount of multiple layers of dead cells. Stratum lucidum: only on joints where skin are only found in thick skin. Dermis: strong, flexible connective tissue layer have fibroblasts, macrophages, and mast cells. Papillary layer: allows tight fit between thick/thin layers with bumpy layer. Dermal papillae: upper part of the bumpy layer of papillary layer, have capillaries/nerve endings for touch/pain. Dermal ridges: gives friction ridges for skin to be tight and holds the epidermis in place. Reticular layer: deeper thick layer of dermis(dense irregular ct) has the cleavage(tension)lines that gives. Involves collagen giving strength/hydration and elastic fibers giving stretch/recoil. Stretch mark/striae: due to rapid skin increase and stretch pressure. Blister: fluid formed inside the space between epidermis and papillary dermis/reticular dermis -happens by constant rubbing and making lots of friction. Flexure lines: tight epithelium connects with bones and allow bending of the joints and etc.