HSCI 100 Lecture Notes - Lecture 1: Blood Vessel, Angina Pectoris, Varicose Veins

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 100
• Professor: Nienke Van Houten

Document Summary

Blood is refreshed in the lung, kidneys, intestine and liver. Lymphatic vessels help this system by collecting excess fluid surrounding tissues and return it to the cardiovascular system. What are the functions of the cardiovascular system: generate blood pressure, transport blood and other components, exchange of nutrients (e. g. glucose) and wastes (e. g. , co2) at the capillaries, regulate blood flow as needed. Heart arteries arterioles capillaries venules veins back to the heart. Arteries and arterioles carry blood away from the heart their walls have 3 layers: thin inner epithelium (simple squamous, thick smooth muscle layer, outer connective tissue arterioles are small arteries that regulate blood pressure. Made of one layer of epithelial tissue form beds of vessels where exchange with body cells occurs create large surface area. Capillaries and lymphatic vessels work together in regulating tissue homeostasis the lymphatic system is largely a one way street. It dumps fluid back into the bloodstream at the subclavian veins near the shoulders.