Describe double circulartion in human beings why is it necessary
Answers
Answer:
During a single cycle blood goes twice in the heart which is known as double circulation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.
Answer:
Explanation:
double circulation takes place when the blood has to enter the heart twice before circulating the body. in the human body, the blood pathway is as follows.
body(dob)--> heart (dob)--> lungs (via PA)--> heart(ob, via PV)--> body(ob)
where, dob= deoxygenated blood
ob= oxygenated blood
PA= pulmonary artery
PV= pulmonary vein
double circuit circulation does not allow oxygenated and deoxygenated blood to mix, unlike single circuit circulation, which helps the body to meet its high energy requirements.
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