HTHSCI 1H06 Lecture Notes - Lecture 2: Aorta, Medulla Oblongata, Volume Overload
13 Jan 2018
School
Department
Course
Professor
Document Summary
Distinguish the key differences between fetal and postnatal/adult circulations. Describe the formation of the great vessels and associated congenital defects. Describe the partitioning of the heart into four chambers and associated congenital defects. Divided into the pulmonary + systemic system. Pulmonary : right side, oxygenation of the blood and removal of co 2. Systemic : left side, delivers oxygen + nutrients, transport waste + co 2 + heat. At the lungs, blood oxygen levels are 97% while 75% in the body tissues. Left + right side of heart clearly divided. Output of one circulation is the input for the other. Blood goes from left side body venous system right side lungs. Oxygenated blood : left atrium left ventricle aorta descending aorta tissues. Deoxygenated blood : ivc + svc right atrium right ventricle pulmonary trunk lungs oxygenation occurs pulmonary veins left atrium. Gas exchange occurs at the placenta since lungs are non-functioning. Open communication between left and right side of heart.
