BIOL302 Lecture Notes - Lecture 5: Pericyte, Endocardium, Pinocytosis
Document Summary
Lymphatic system: circuit of vessels, arterial system takes away from heart, venous system, drains fluid to venous system. Note: large vessels have their own blood vessels. Function: distribute blood from heart to tissue. Arteries: arteries have large tunica media, 3 types of arteries elastic/large, muscular, arteries. Large/elastic arteries: close to the heart, tunica intima, tunica media (thick, elastic fiber (mainly) & collagen, adventitia (thin, vasa vasorum. Medium/ muscularis arteries: tunica intima, tunica media. Inner elastic lamina smooth muscle external. Elastic lamina: adventitia (thick, collagen & elastic fiber. Arterioles: tunica intima, endothelium, tunica media (relatively thick, smooth muscle, 1-8 layers, adventitia, often cannot discern. Capillaries: endothelium only (pericyte, site of exchange, 3 types, continuous, pinocytosis, common, fenestrated, via opening, kidneys, discontinuous, endothelial holes, basal lamina holes, liver. Note: endothelial cells (capillaries: barrier, selective active transport, paracrine secretions, blocking clotting. Inflammation: regulate blood flow, make basal lamina, function:
