Arterial Flow Relationships - Video Lesson

Hey, everybody. Welcome to today's lesson on hemodynamics. This lesson focuses on arterial pressure flow relationships, exploring its interactions with pressure, resistance, and flow. Arterial blood flow moves oxygenated blood from the heart through the arteries to the tissues of the body. It is driven by the pressure gradient, which is the difference in pressure between two points in the circulatory system created by the heart's pumping action. Blood flows from areas of high pressure in the arteries to areas of lower pressure in the capillaries and veins. The relationship between pressure and flow in the arterial system can be defined by a modified version of Ohm's law where the pressure gradient is equal to flow times resistance. This equation tells us that blood flow q is driven by the pressure gradient delta p generated by the heart and is regulated by vascular resistance r created by the arterial walls, particularly in smaller arteries and arterioles.