Question

Do fish have an open or closed circulatory system? How many chambers does a fish heart have? How does blood flow throughout the body of a fish?

Answer 1

ANSWER:

Fish have single circulatory systems within which blood passes through the guts just one occasion every time it completes a full circuit round the fish's body, as well as through its gills and every one alternative organs and tissues.

The fish heart has 2 chambers, an atrium and a ventricle. Blood enters the atrium when current through the fish, going it poorly aerated. The blood is then tense into the ventricle. From the ventricle the blood passes onto the gills wherever it becomes aerated so circulates through the fish before starting the circuit once more. As in humans, the atrium is comparatively cut walled and also the ventricle is a lot of muscular because it pumps the blood into the remainder of the body. The gills ought to be skinny thus diffusion of gas will occur expeditiously and might be simply broken by a high pressure level. however there needs to be enough pressure level to induce the blood to flow into through the body.