The cardiovascular system is made up of 3 parts. The heart, Blood vessels and blood.

Authors Avatar

Cardiovascular System

The cardiovascular system is made up of 3 parts. The heart, Blood vessels and blood.

The cardiovascular system is responsible for Delivering oxygen and nutrients to the body, Carrying hormones, removing waste products such as Co2 and lactic acid and maintaining the body temperature.

The Flow of blood around the heart

In order to make its journey around the body blood is carried through five different blood vessels. These are the; arteries, arterioles, capillaries, venules and veins.

  • left atrium receives oxygenated blood from lungs through pulmonary vein (only veins carry pure blood)
  • pure blood(oxygenated) is pumped to left ventricle through bicuspid and pump to all the other parts of the body through aorta
  • right atrium receives de oxygenated blood from all parts of the body
  • impure blood(de oxygenated) pumped to right ventricle through tricuspid and pump to lungs through pulmonary artery(only artery carries impure blood) for oxygenation.

Blood flows through the heart and around the body in one direction. It is known as the one way street. This is because of the valves in the heart that only let the blood go one way. The heart sometimes gets known as a double pump as the right hand side of the heart (deoxygenated blood) is pumped to the lungs and the left hand (oxygenated blood) is pumped to the body.

Join now!

Right hand side. When the heart is relaxed, deoxygenated blood from the body enters the heart via the venae cavae. Then it enters the right atrium. From the right atrium it contracts and pushes blood down through the tricuspid valve and into the right ventricle. Then the right ventricle contracts, the tricuspid valve closes and blood is pushed up and out of the heart through the semi lunar valve and into the pulmonary artery which takes blood to the lungs. The heart then relaxes and the semi lunar valves close to stop blood flowing back into the heart. The blood ...

This is a preview of the whole essay