3 Major Parts of The Circulatory System

Heart

Blood Vessel

Blood

The Heart

Function of the Heart

Heart is located at the center of your chest slightly tilted to the left . Its function is to pump blood and keep the blood moving throughout the body . The heart beats about 3 billion times during an average lifetime . It is an organ about the size of your fist .

Heart Chambers

4 Chambers of the Heart

Right and Left Auricle-are responsible for receiving used blood coming from all parts of the body.

Right and Left Ventricle-are the pumping chambers of the heart , It is one of two large chambers that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs

Heartbeat

Heartbeats occur in two stages:Systole and Diastole Stage,in systole stage the heart contracts,in diastole stage,the heart relax.This alternate relaxation and contraction is called CARDIAC CYCLE.

The Blood

The blood is the liquid medium that is constantly flowing throughout the body.It is referred to as the River of life.The blood transports water,oxygen,nutrients,salts,hormones and other substances that sustain life.A young person has about a gallon of blood,while an adult human has about 5 to 6 liters of blood.

Components of the BloodRed Blood Cells (RBC)

Erythrocytes are small , spherical enucleated and biconcave cell. It trans--port gases (oxygen and carbon dioxide) respectively to and from cells.

White Blood Cells (WBC)Leukocytes are irregular in shape,and are slightly larger than the RBC.It fights bacteria and germs.

Platelets

Thrombocytes are the smallest of the formed components of the blood. The are designed to begin the process of coagulation or clot formation whenever a tissue or blood vessel is broken.

Blood Vessels The blood vessels are the vast networks of small tubes that carry blood throughout the body . It is like a water pipe that carries water to the different places. If you could take all the blood vessels out and line up end to end, they would measure about 96 600 kilometers.

There are 3 types of blood vessels in your body . These are arteries, veins and capillaries. The network of blood vessels spreads through the entire body, even into the bones and muscles.

Types of Blood Vessels

ArteryThese blood vessels carry oxygenated blood away from the heart. The largest artery is the aorta. While the smallest is the arterioles.

VeinsThese blood vessels carry deoxygenated blood back to the heart. The largest vein is the vena cava. While the smallest is the venules.

CapillariesThese blood vessels connect the veins and the arteries.

Path Of Circulation

Types of Circulation

Pulmonary Circulation:Vena Cava -Right Atrium-Tricuspid Valve-Right Ventricle-Pulmonary Artery-LUNGS

Systemic Circulation:LUNGS-Pulmonary Vein-Left Atrium-Bicuspid Valve-Left Ventricle-AORTA

Ailments of The Circulatory System

Heart Diseases Congenital Heart

Disease Angina Pectoris Heart Failure

Blood Vessel Diseases

Aneurysm Hypertension Arteriosclerosis Stroke Thrombosis

Blood Diseases Anemia Iron-deficiency

anemia Aplastic anemia Sickle-cell anemia Polycythemia Leukemia Hemophilla Purpura and

Petichiae

Ways to Keep Your Circulatory System Healthy

•Exercise Regularly

•Eat a well-balanced and low fat diet

•Live in a clean environment

•Avoid smoking or staying with smokers

•Have a positive outlook in life