Explain Single circulation with the help of a diagram and also tell how they live if their Blood doesn't get oxygenated like the double circulation??
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Answers
Answer:
Single circulation is the type of circulatory system that occurs in fishes, in which the blood passes only once through the heart in each complete circuit of the body. In fish, the system has only one circuit, with the blood being pumped through the capillaries of the gills and on to the capillaries of the body tissues. This is known as single cycle circulation. The heart of fish is, therefore, only a single pump (consisting of two chambers).
The blood circulating in the body has already been oxygenated in the gills. Disadvantages: Due to lower pressure the rate of delivery of oxygen is slow.
Explanation:
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In the single circulatory system, the blood passes the heart only once during the circulation. Single circulation systems consist of blood, blood vessels and a heart which receives de-oxygenated blood from the atrium and pumps it through the ventricle so that it continues onwards to the gills.
The de-oxygenated blood is oxygenated as it passes through the gill capillaries which are tiny blood vessels whose walls are so thin that the waste product carbon dioxide can be released from the de-oxygenated blood and oxygen accepted into the blood before the blood moves onwards through the blood vessels throughout the rest of the animal's body.
