HTHSCI 1H06 Lecture Notes - Lecture 4: Inferior Mesenteric Artery, Superior Mesenteric Vein, Superior Mesenteric Artery

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1H06
• Professor: Peter Helli

Document Summary

Ivc, hepatic, paired (suprarenal, renal, gonadal, lumbar), ext. Ivc: returns blood from abdomen, pelvis, lower limbs: coronary sinus: returns blood from great cardiac vein, middle cardiac vein, small cardiac vein. Svc: returns blood from head, neck, chest, upper limbs. Suprarenal: returns blood from adrenal gland: hepatic veins: returns blood from liver, renal: returns blood from kidneys, gonadal: returns blood from gonads, external iliac vein. Lumbar: returns blood from lumbar supplied regions: hepatic portal system (shunt blood from inf. Mesenteric through liver: portal vein: from one capillary network to another, capillaries from gi system to liver, responsible for conversion of substances and modifying substances as well. Includes endothelium (single layer: release of no (nitric oxide, vasodilation, vasculature tone, basement membrane (layer of connective tissue, providing structural support) Function: conduct blood to the muscular arteries, pressure reservoir: muscular artery: diameter is smaller, brachial artery, more smooth muscle, less elastic tissues and endothelium, arterioles. Function: greater vasoconstriction and vasodilation, direct blood flow.