Draw labelled diagram of Heart.
irculation of blood in human
Answers
Explanation:
Humans have a four-chambered heart and the type of blood circulation is called as double circulation. The blood pumped by the right ventricle enters the pulmonary artery, whereas the left ventricle pumps blood into the aorta. The deoxygenated blood pumped into the pulmonary artery is passed onto the lungs from where the oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes the pulmonary circulation. The oxygenated blood entering the aorta is carried by a network of arteries, arterioles and capillaries to the tissues from where the de-oxygenated blood is collected by a system of venules, veins and vena cava and emptied into the right atrium. This is the systemic circulation. These two processes are together called as double circulation. This process is necessary because the blood enters twice in the heart in a single cycle. The deoxygenated and the oxygenated blood does not get mixed and the circulation is maintained properly.
Explanation:
Humans have a four-chambered heart and the type of blood circulation is called as double circulation. The blood pumped by the right ventricle enters the pulmonary artery, whereas the left ventricle pumps blood into the aorta. The deoxygenated blood pumped into the pulmonary artery is passed onto the lungs from where the oxygenated blood is carried by the pulmonary veins into the left atrium. This pathway constitutes the pulmonary circulation. The oxygenated blood entering the aorta is carried by a network of arteries, arterioles and capillaries to the tissues from where the de-oxygenated blood is collected by a system of venules, veins and vena cava and emptied into the right atrium. This is the systemic circulation. These two processes are together called as double circulation. This process is necessary because the blood enters twice in the heart in a single cycle. The deoxygenated and the oxygenated blood does not get mixed and the circulation is maintained properly.
c) Haemoglobin is the respiratory pigment found in the RBCS of humans. This pigment is responsible for transport of oxygen to the body cells for cellular respiration. Therefore, deficiency of haemoglobin in the blood can affect the oxygen supplying capacity of blood which leads to the deficiency of oxygen in the body cells. It can also lead to a disease called anaemia.
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