Question

Why do humans have double circulatory system?​

Answer 1

Answer:

The majority of mammals (including humans) utilize a double circulatory system. ... Double circulatory systems are important because they ensure that we are giving our tissues and muscles blood full of oxygen, instead of a mixture of oxygenated and deoxygenated blood

Explanation:

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Answer 2

Answer:

The human circulatory system has three key components: blood vessels, blood and the heart. It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart.

Explanation:

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