NURS 2820U Lecture Notes - Lecture 2: Impaired Glucose Tolerance, Aorta, Adiponectin
Document Summary
Pathophysiology: the biologic basis for disease in adults and children. Lumen is bigger in vein compared to artery. Smooth muscle layer of the tunica media is thinner in the vein while thicker in the artery (due to artery has to withstand larger pressure when blood lows through it) Valve in medium-sized vein promotes one-way low towards the heart. It stops the blood from regurgitaing back to the periphery and pushes it up to the heart with the help of the skeletal muscle. Valves stop the blood from going backward. With the help of skeletal muscle pump, the blood is propelled back to the heart. Varicose veins: valves are deformed which cause blood to regurgitate and overtime the. Vein becomes distended instead of being straight which causes it to dilate and skin. Varicose veins: used to be called shopkeeper"s vein: reason 1 standing for extended periods: used to be called shopkeeper"s vein.
