Question

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Answer 1

The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system

The human heart is one of the most important organs responsible for sustaining life. It is a muscular organ with four chambers. The size of the heart is the size of about a clenched fist.

The human heart functions throughout a person’s lifespan and is one of the most robust and hardest working muscles in the human body.

Besides humans, most of the other animals also possess a heart that pumps blood throughout their body. Even invertebrates such as grasshoppers possess a heart like pumping organ, though they do not function the same way a human heart does.

Position of Heart in Human Body

The human heart is located between the lungs in the thoracic cavity, slightly towards the left of the sternum (breastbone). It is derived from the embryonic mesodermal germ layer.

The Function of Heart

The function of the heart in any organism is to maintain a constant flow of blood throughout the body. This replenishes oxygen and circulates nutrients among the cells and tissues.

Following are the main functions of the heart:

One of the primary functions of the human heart is to pump blood throughout the body.Blood delivers oxygen, hormones, glucose and other components to various parts of the body, including the human heart.The heart also ensures that adequate blood pressure is maintained in the body

There are two types of circulation within the body, namely pulmonary circulation and systemic circulation.

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Answer 2

Function of Heart

The heart performs the following important functions:

• The primary function of the heart is to pump blood throughout the body.
• It supplies oxygen and nutrients to the tissues and removes carbon dioxide and wastes from the blood.
• It also helps to maintain adequate blood pressure throughout the body.
• It also helps to maintain adequate blood pressure throughout the body.

The heart functions in the following ways:

1. The arteries receive oxygenated blood from the heart and supply it throughout the body. Whereas, the veins carry the deoxygenated blood from all the body parts to the heart for oxygenation.
2. The right atrium receives blood from the veins and pumps it to the right ventricle.
3. The right ventricle pumps the blood received from the right atrium to the lungs.
4. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.
5. The left ventricle pumps the oxygenated blood throughout the body.

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