KNES 260 Study Guide - Midterm Guide: Bronchus, Gut Flora, Arytenoid Cartilage

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Arteries: 3 in decreasing size (arteries, arterioles, capillaries), 3 layers of wall (externa, media, intima with lumen and lamina), 3 types (elastic w/high elastin tissue, muscular w/lots of smooth muscle, arterioles are smaller). 5 features of arteries ( valves, thick walls, elastic tunica media, sympathetic. Veins: 3 in increasing size (capillaries, venules, veins), 3 types (large like ivc/svc w/lots of collagen and smooth muscle, medium with valves like gsv, small like venules and unite plexuses). 5 features veins (medium veins with valves, thinner walls, elasticity, sympathetic ns, non-muscular venules) Capillaries: endothelial (no smooth muscle or elastin or collagen) tubes, network (capillary beds), exchange through diffusion! Other important heart features: 1) mediastinum (loose connective tissue and fat), 2) pericardium sac (double-walled) with tough outer fibrous layer and heart-covering serous layer (with superficial parietal and deep visceral layers, and fluid-filled pericardial cavity in between) 3 tissue: epicardium (thin, external, lubrication), myocardium (middle, huge, muscular,