Cardiovascular System

• The cardio vascular system of the body is responsible for transporting the blood of arteries, veins and muscles.

• It carries oxygen and essential nutrients to various parts of the body and eradicated the harmful waste products from the body tissues.

• The heart is responsible for pumping blood through arteries and blood vessels to different parts of the body.

• The impure blood returns to the heart through the veins.

• The only arterial vessels that carry deoxygenated blood are the pulmonary arteries.

• Blood makes full trip around the body in about one minute.

• The heart is the most important part of this system which is about the size of a human fist and situated at the left of the chest.

• The heart needs a constant supply of oxygen which is supplied by the blood.