Describe double circulation of blood in human beings why it is necessary

Explanation- The heart receives deoxygenated blood from different parts of the body, and it pumps this blood to the lungs. The oxygenated blood from the lungs returns to the heart, which is pumped again into different parts of the body by the heart. Thus, the blood passes twice through the heart making one complete round through the body. This is called double circulation.

Because both oxygen and carbon dioxide have to be transported by the blood, the heart has different chambers to prevent the oxygen-rich blood from mixing with the blood containing carbon dioxide. The human heart is divided into four chambers − the right atrium, the right ventricle, the left atrium and the left ventricle. Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts, while the next chamber, the left ventricle, expands, so that the blood is transferred to it. When the muscular left ventricle contracts in its turn, the blood is pumped out to the body.

Systemic circulation involves the movement of oxygenated blood from the left ventricle of the heart to the aorta. It is then carried by the blood through a network of arteries, arterioles, and capillaries to the tissues. From the tissues, the deoxygenated blood is collected by the venules, veins, and vena cava, and is emptied into the left auricle.

The blood passes through the heart twice through separate pathways for completing one cycle. This type of circulation is called double cirulation. The double circulation of blood includes: (1) Systemic cirulation : 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 the veins to pour into (auricle). Right atrium transfers the blood into the right ventricle. (2) Pulmonary circulation : The deoxygenated blood is pushed by the right ventricle into the lungs for oxygenation through pulmonary artery. The oxygenated blood is brought to left atrium of the human heart through pulmonary vien. From left atrium of the human heart through pulmonary vien. From left atrium, the oxygenated blood is pushed into the left ventricle. The left ventricle pumps oxygenated blood into aorta for systemic circulation. These two types of circulation taken together is called double circulation. Necessity of Double Circulation : In humans, having four chambered heart (which consists of two auricle and two ventricle). The left side and right side of heart is completely separated to prevent the oxygenated blood from mixing with deoxygenated blood. Such a separation allows a highly efficient supply of oxygen to the body cells which is necessary for producing a lot of energy. This energy is useful in case of human beings that have high energy need because th...

Double circulation helps to keep oxygenated and deoxygenated blood from mixing. Such separation allows a highly efficient supply of oxygen to the body. This is useful in animals that have high energy needs, such as humans (as well as birds and other mammals), which constantly use energy to maintain their body temperature. In multicellular organism like human the energy requirement for processing life process is high to meet such huge energy requirement it is important to separate oxygenated and deoxygenated blood which can be only get by using double circulation system and double circulation takes place which is also required for maintaining body temperature. Question Description Why double circulation is necessary in human beings.? for Class 10 2023 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Why double circulation is necessary in human beings.? covers all topics & solutions for Class 10 2023 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Why double circulation is necessary in human beings.?. Here you can find the meaning of Why double circulation is necessary in human beings.? defined & explained in the simplest way possible. Besides giving the explanation of Why double circulation is necessary in human beings.?, a detailed solution for Why double circulation is necessary in human beings.? has been provided alongside types of Why dou...

Oxygen rich-blood from the lungs comes to the thin walled upper chamber of the heart on the left, the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts while the next chamber, the left ventricle, relaxes, so that the blood is transferred to it. When the muscular left ventricle contracts in its turn, the blood is pumped out to th body. De-oxygenated blood comes from the body to the upper chamber on the right, the right atrium, as it relaxes. As the right atrium contracts, the corresponding lower chamber, the right ventricle, dilates. This transfer blood to the right ventricle, which in turn pumps it to the lungs for oxygenation. Blood goes through the heart twice during each cycle in other vertebrates. This is known as double circulation. The separation of the right side and the left side of the heart is useful to keep oxygenated and deoxygenated blood from mixing.