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Jul 30, 2022 · As blood flows through the veins, the rate of velocity increases, as blood is returned to the heart. Disorders of the Cardiovascular System: Arteriosclerosis Compliance allows an artery to expand when blood is pumped through it from the heart, and then to recoil after the surge has passed.
- Capillary Exchange
The patient’s blood would flow more sluggishly from the...
- Structure and Function of Blood Vessels
Arteries and veins transport blood in two distinct circuits:...
- Capillary Exchange
The capillary beds converge into small veins after traveling over the alveolar surfaces, and these small veins then collect into four pulmonary veins that lead back to the left heart. This is an unusual example of veins carrying blood with arterial gas pressures.
In the pulmonary circulation, this resistive load is typically characterized by the measure of pulmonary vascular resistance (PVR), where PVR is defined as the ratio of the drop in mean pulmonary artery pressure (mPAP) across the pulmonary circuit, to cardiac output.
If blood is to flow from the veins back into the heart, the pressure in the veins must be greater than the pressure in the atria of the heart. Two factors help maintain this pressure gradient between the veins and the heart.
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
Apr 13, 2024 · The lungs receive deoxygenated blood from the pulmonary arteries and return oxygenated blood to the heart via the pulmonary veins. Remember, arteries carry blood away from the heart, while veins return it to the heart.
Mar 13, 2023 · Cardiac output propels blood through the arteries and veins as a function of ventricular contraction. Ventricular motion results from the shortening of cardiac myocytes concentrically.
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May 1, 2023 · Pulmonary circulation includes a vast network of arteries, veins, and lymphatics that function to exchange blood and other tissue fluids between the heart, the lungs, and back. They are designed to perform certain specific functions that are unique to the pulmonary circulation, such as ventilation and gas exchange.
