Question

Explain the main route of blood flow in human body.

Answer 1

Hi mate

Here is your answer,

Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve. Then the blood is sent into the lungs for oxygenation and the blood enters the left atria and then to the left ventricle through the bicuspid valve. Oxygen-rich blood moves out of the aorta to the rest of your body.

Answer 2

Inferior vena cava and Superior vena cava

Explanation:

The inferior and superior vena cava, two big veins that drain oxygen-poor blood from the body into the right atrium, bring blood into the heart.

Inferior vena cava

• The inferior vena cava is a vein that returns blood from the lower body.
• The iliac veins are the veins in the legs.
• The iliac veins meet at the fifth lumbar vertebra in the small of the back.
• Blood is pumped to the lungs to receive oxygen before being pushed back out to the body through the inferior vena cava.

Superior vena cava

• The superior vena cava is a blood vessel that connects the upper body to the heart.
• The superior vena cava has a thin wall and blood pressure is low.
• A big vein that carries deoxygenated blood into the heart is known as the superior vena cava.
• The function of Superior vena cava is delivering oxygen into the bloodstream and removing carbon dioxide.