ANP 1105 Study Guide - Final Guide: Bronchus, Natriuretic Peptide, Respiratory Minute Volume

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jackie Carnegie

Document Summary

Capillary: site of diffusion and gas exchange (1 cell wide) Small venules branch into large veins: poor blood back towards the heart. 3 functional layers of blood vessels: tunica intima (internal lining, tunica adventitia (externa, tunica media (middle lining) What makes up each layer: tunica externa: collagen, small blood vessels, tunica media: smooth muscle and external elastic membrane (arteries, tunica intima: endothelium, subendothelial layer, internal elastic membrane (arteries) What are the three types of arterial vessels? (closest to furthest from heart) Muscular arteries (distributing) -> blood pressure, vasodilation/vasoconstriction, directing blood blow towards muscles. Arterioles -> delivering blood to capillary beds (delivery blood on a local region) Continuous capillaries -> not very permeable: blood supply going up to the brain, skin and muscle. Fenestrated capillaries -> moderately permeable due to pores (kidneys) Sinusoid capillaries -> most permeable (large gaps), cells and proteins can go through (spleen rbc graveyard, bone marrow)