PSL201Y1 Lecture 13: PSL201 Week 13 Reading Notes
Document Summary
Cardiovascular system is critical to maintenance of homeostasis by providing cells with oxygen and nutrients necessary to generate atp and delivers carbon dioxide and waste products to organ systems that eliminate them from the body. Heart: organ that consists of primarily of muscle whose function is to pump blood (1) to organs and provide nutrients and to eliminate waste (2) to the lungs for the exchange of gases. Cardiovascular system consists of three components (1) the heart- muscular pump that drives the flow of blood through blood vessels. Regulates blood pressure and volume (has sensory and endocrine functions) (2) blood vessels- conduits through which the blood flows. Regulates blood pressure and distribution (important sensory and effector organs) (3) blood- fluid that circulates around the body carrying materials to and from cells. Acts like a communication link with nervous system. 2 upper chambers called atria which receive blood that comes back to the heart from the vasculature (minor role)
