BIO310H5 Lecture Notes - Lecture 14: Pulmonary Vein, Phylogenetic Tree, Circulatory System
Document Summary
Bio310 lecture 11 continued - the circulatory system. Blood flows in a continuous circuit of tubes. Arterial system - distribute blood throughout body and acts as pressure reservoir. Capillaries - transfer of materials between blood and tissue. Venous system - returns blood to heart and acts as a blood reservoir. When you donate blood it is venous blood - arterial blood has too high of a pressure and so it is impossible to make hole in artery and be able to survive from blood loss. The typical circulatory plans of the major vertebrate groups, plotted on a phylogenetic tree of groups. Mixture of blood in amphibian heart - oxygenated and deoxygenated because of help with diving time. Going to left side is deoxygenated but becomes mixed in the heart. Non-crocodile reptiles - some have skin breathing but very few turtles have skin breathing - lung returns blood to heart oxygenated.
