Question

Double circulation in human being

Answer 1

Double circulation system is usually found in complex organisms like us , humans.It has two parts - Pulmonary and Systemic.

Let's start from pulmonary circulation . The right ventricle pumps the deoxygenated blood into the lungs and it is returned in the left auricle. Simultaneously in systemic circulation , the left ventricle pumps blood to all parts of the body and returns back in the right auricle. Valves in heart check that the blood flows in one direction only. In this system, blood flows twice to complete a single cycle and is known as Double circulatory system. It is necessary for maintaining body temperature and collecting CO2 from cells and provising oxygen and energy to cells & tissues.

Answer 2

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$\Large\fbox{\color{purple}{QUESTION}}$

DOUBLE AND SINGLE CIRCULATION

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$\Large\mathcal\pink{DOUBLE \: CIRCULATION}$

Deoxygenated blood from the body tissues is poured into right atrium. Contraction of heart forces it into right ventricle. From right ventricle deoxygenated blood flows to the lungs through pulmonary artery.oxygenated blood from lungs is return into left atrium and then into left ventricle. The left ventricle forces the oxygenated blood to the whole body.thus, for making one complete round of circulation circuit around all body parts, the blood passes through the heart twice.

the pathway of blood from heart to the lungs and back to the heart is called pulmonary circulationand the pathway of blood from heart to the body and back to hurt is called system circulation this is known as double circulation of blood

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