Why are valves present in heart and veins?

Heart:

1. The heart is the pumping organ that helps to pump blood to all parts of the body.
2. It is found in the thoracic cavity.
3. It is located above the diaphragm and between the lungs.

Veins:

1. Veins are one of the types of blood vessels found in most animals.
2. The veins carry deoxygenated blood from the tissues to the heart.
3. The pulmonary and umbilical veins are the exceptions that carry oxygenated blood to the heart.

Valves present in heart and veins:

1. Both heart and veins contain valves.
2. These valves are present to prevent the backflow of blood to their respective chambers.
3. Valves help to ensure that the blood flow occurs in only one direction.