PHSL232 Lecture Notes - Lecture 7: Pulmonary Vein, Pulmonary Artery, Pulmonary Circulation
Document Summary
Gain a general overview of the organisation of the vascular system: distribution of blood volume, cross sectional area and flow velocity; pressure gradient and in series resistances. To understand the specific structure of various vessel types- which are dependent on function. Provide oxygen and nutrients to every cell in the body. To remove carbon dioxide and waste products from every cell in the body. Left ventricle aorta arteries arterioles capillaries venules veins vena cava right atrium and ventricle. Right ventricle pulmonary artery arterioles capillaries venules pulmonary vein left atrium and ventricle. Nb: velocity = speed, independent of volume (e. g. cm/s) Pressure gradient is driving the force of flow. Resistance is a measure of the friction" that impedes flow, and is calculated: Note: q, p, r change along the vascular pathway. Poiseuille relationship: relates pressure, tube direction, viscosity to blood flow".