define double circulation ??
Answers
Explanation:
The blood passes through the heart twice to separate Pathways for complete one cycle this type of circulation is called double circulation the double circulation of blood include 1.systematic circulation
2.pulmonary circulation
systematic circulation: it supplies oxygenated blood from left auricle to left ventricle which is pumped to aorta to distribute blood to various body parts. The deoxygenated blood is collected from the various body organs by veins to pour into vena cava and finally into right Atrium. right Atrium transfer this blood into the right ventricle.
pulmonary circulation: the deoxygenated blood is pushed by the right ventricle into the lungs for oxygenation through Pulmonary artery. The oxygenated blood is brought back to the left Atrium of human heart through Pulmonary vein. From left Atrium the oxygenated blood is pushed into left ventricle. The left ventricle pumps oxygenated blood into aorta for systematic circulation.
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Double circulation is a process in which blood flows twice through the heart.
It includes two steps
1.Systemic circulation.
2.Pulmonary circulation.
From left ventricle of the heart blood flows to aorta, artery ,arteriole, capillary and finally to tissues.Tissues are connected with capillaries of vein and artery.
From tissues blood goes to capillary of vein,venules ,venacava then finally into the right atria and then to right ventricle.
Pulmonary artery carries impure blood to lungs for purification.
After purification oxygenated blood reaches to the left atria via pulmonary vein then to left ventricle .
Here blood goes twice through heart.
Pulmonary circulation starts from right ventricle ,after purification it ends in left atria.
Systemic circulation starts from left ventricle the goes to all part of the body finally reaches to right atria through superior and inferior venacava.