The Human Blood Circulatory System

Main parts of the human blood circulatory system

Heart, blood, blood vessels and lungs

Function of human blood circulatory system

Circulates blood from the heart to the entire body and back to the heart again

Function of heart

Pumps blood to the lungs and the entire body

Function of blood

Transports oxygen, nutrient, water and excretion

Function of blood vessels

Transport blood throughout the body

Function of lungs

Exchange of oxygen and carbon dioxide gases

Heart → lungs

Carbon dioxide is absorbed from the blood into the lungs and oxygen is absorbed from the lungs into the blood

Heart → other parts of the body

Pumps the blood with more oxygen through the blood vessels (aorta)

The movement of blood in the human circulatory system (cycle block)

Importance of blood circulatory system

Providing oxygen, nutrient, water to the body and carrying carbon dioxide, other wastes to be excreted from the body