in Body Fluids and Circulation (Cardiovascular System, Circulatory system) by

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The following are the functions of the cardiovascular system:

The Transport of Nutrients: The Cardiovascular system acts as the main transport medium of the nutrients. The organs get the nutrient through the blood, which is carried by the cardiovascular system. The veins and the arteries serve as the channels for the nutrient supply. The nutrient likes the glucose made from the digested carbohydrates are also taken from the digestive system to the needed organ likes say for example any muscle, which needs the nutrient for its functions.

The chemicals like hormones of the endocrine system are transported to the target or needed organ by the cardio vascular system. The waste products are sent to the urinary system for the expulsion from the body and even waste products are transported to the lungs.

The Cardiovascular system is divided into two circuits, called as the systemic circuit and the pulmonary circuit. The division is done so as to deliver the oxygen to the body and take away the carbon dioxide from the body. Hence, we can say that cardiovascular system works with the conjunction with the RS (Respiratory System).

The following are the contents of the pulmonary circuit:

heart, lungs pulmonary veins and pulmonary arteries. The Pulmonary circuit sends the deoxygenated blood from the heart to the lungs to get oxygenated. The blood again returns to the heart via four pulmonary veins after its gets oxygenated. The blue blood signifies the deoxygenated blood while red blood signifies the oxygenated blood.

The protection from the blood loss and the infection:

Following are the constituents of the blood:

1.       Red Blood cell

2.       White Blood Cell

3.       Platelets

The Red blood cells are responsible for the transport of the oxygen to the tissues and the organs of the body.

The White Blood Cells plays important role in the defense mechanism of the body. The White Blood Cells increases in the number when there is any type of infection.

The Platelets plays important role in clotting mechanism of the blood. The platelets decreases in some of the infection like malaria, dengue also in some deficiency of clotting factors.

The Cardiovascular system also plays important role in the thermoregulation of the body. Whenever there is any change in the temperature within the body, the change is noted by the thermoreceptors, which in turn alerts the hypothalamus in the brain. In return hypothalamus reacts to this signal and maintains the temperature.

The Cardiovascular system also plays important role in maintaining the fluid balance of the body. The nervous system and the endocrine system together with the cardiovascular helps in maintaining fluid balance. The fluid is necessary in transport of electrolytes, nutrients and the gases thorough cells. The imbalance in fluid levels causes the condition of dehydration of hyperhydration. Both of these illness cause disturbance in normal body function. It can cause death if not treated.

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