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Fish have one circuit and two heart chambers in their circulatory system. Blood collects in the atrium and moves to the ventricle where it is pumped first to the gills to collect oxygen, then to the body to deliver the oxygen to tissues. Since the blood does not return to the heart after moving through the gills, it has low pressure as it moves through the body.
What else can I help you with?
If blood pressure is low in veins how does blood getpumped through the veins back to the heart?
Veins have valves in them which help transport the blood.
Is blood pressure higher in capillaries than in veins?
The blood is under low pressure once entering the capillary.
What is the difference between the blood in the arteries and the blood in the veins?
Veins do not pulsate Arteries pulsate Veins can easily collapse Arteries do not collapse (except in shock) Veins contain valves Blood pressure is low in the veins and higher in the arteries
Why does blood come out slowly when drawing blood?
Blood draws normally occur through veins, though which blood moves slowly. There is low pressure and little muscular activity in the veins, resulting in lower pressure.
Does high blood pressure affect the veins?
Veins don't carry blood at high pressure arteries carry blood at high pressure. Arteries have a thick, elastic muscle layer that can handle high pressure of the blood flowing through them.
Do veins have thin walls?
Relative to the walls of arteries, the veins' walls are thinner, because the pressure of the blood in the veins is much lower; so low in fact, that valves are required to prevent blood in the veins flowing backwards.
Can you propose a mechanism by which blood from the veins may be returned to the heart?
Liquid flows from high pressure to low.
Is blood pressure highest in the veins?
No. Veins carry the blood back to the heart, and are low-pressure vessels. The arteries are the high-pressure vessels.
What blood vessel carries blood at high pressure and why?
Arteries carry blood at high pressure, simply because they are linked directly to the heart and lungs.
What happens to blood pressure as blood moves from arteries to veins?
Blood pressure decreases as blood moves from arteries to veins. For this reason, veins have valves to encourage the one-way flow of blood back to the heart.
Is blood flow faster in veins?
Blood flow is faster in arteries than in veins. Blood flow in veins is lower pressure.
What blood vessels have lower blood pressure?
veins.
