If a blood clot forms inside a vein in the leg, it may travel through the circulatory system. What is the first capillary bed the clot would reach, where it might block blood flow?

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Hey everyone, Let's take a look at this question together, identify the correct order of flow of a blood clot that forms inside an arm vein and travels to the lung capillary bed where it may block blood flow. Let's recall what we know about the cardiovascular system of the body and the pathway of which a blood clot could follow from forming inside of the arm vein and traveling to the lung capillary bed. So we start off in the arm vein and we know that all the veins of the arms, combined together with veins of the neck and drain into the right side of the heart. But obviously to get into the right side of the heart, we know that we have to go through the vina cava to drain into that heart. And then once we're in we know that we have to go through the right atrium which is connected to the right ventricle. And so once we leave that right ventricle, we know the next step to exit the heart to the lungs, would be through the pole Maneri artery and then from the pulmonary artery we would get to the lung capillary bed. So this pathway is that correct order of flow of a blood clot that forms inside the arm vein and travels to the lung capillary bed, which would make answer choice B the correct answer because we know that when we start in that arm vein we have to travel through the arm veins into the heart through the vena cava. Or more specifically, that inferior vena cava, which the inferior vena cava is the one on the bottom side of the heart. So we enter that heart through that interior vena cava, which then drains into the right atrium and connects to the right ventricle, which then travels through the pulmonary artery out of the heart and to the lungs into the lung capillary bed, Thus making answer choice B. The correct answer. And just to double check our answer here, you can see a diagram that shows the pathway of how that blood clot would travel. So it's hard to see. But here we have the vena cava which we can see travels upward into the heart, which this is that right atrium. And then down here is the right ventricle. So we have the right atrium and the right ventricle. And we travel up and out through the pulmonary artery to the lungs. And that's where the lung capillary bed is found. So answer choice B. Is the correct order of flow of that blood clot. I hope you found this video to be helpful. Thank you and goodbye.

If a blood clot forms inside a vein in the leg, it may travel through the circulatory system. What is the first capillary bed the clot would reach, where it might block blood flow?

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Key Concepts

Circulatory System

Capillary Beds

Venous Return