BIO 408 Lecture Notes - Lecture 1: Circulatory System, Ejection Fraction, Fick Principle
Document Summary
Outline for lecture 1: the heart as a pump. Functions of the cardiovascular system: blood flow, co2 distribution, thermal regulation, passive/active diffusion of blood vessels, transport of glucose and lactase throughout the body (nutrients, removal of wastes, hormone transport. Basic components of a circulatory system: pump, fluid, tubes. How is flow/circulation produced: flow is driven by a pressure difference between two points, flow is driven by a pressure gradient, pressure = force/area, e. g. lbs. /square inch, mmhg, flow = change in pressure/resistance. Mammal circulation: head/brain/arms/body -> inferior/superior vena cava -> deoxygenated blood -> right atrium -> right ventricle -> pulmonary arteries -> lungs, lungs -> oxygenated blood -> pulmonary veins -> left atrium -> left ventricle -> aorta -> Head/brain/arms/body: veins = blood to the heart, arteries = blood from the heart, low pressure into the heart, high pressure away from the heart.
