The Human Circulatory System

The Human Circulatory System

The System that Helps our body to transport nutrients and proteins from the digested food to the site of action with the help of the bloodstream, the waste materials from the organs to the excretory organs to dispose of them out of the body is called the circulatory system.

The Human Heart

The Human Heart is the main organs for supporting life in the human body. Its main function is to pump blood to all the body parts with the help of veins and artilleries it plays a major function in the purification of deoxygenated blood.

Blood

                 The Blood is made up of 4 elements namely:      

1. Plasma

2. Red Blood Cells

3. White blood Cells

4. Blood Platelets

Blood is the source of transporting nutrients and oxygen in the human body. They also fight against foreign cells in the body.

Red Blood Cells

The red blood cells transport oxygen and nutreints in the body.

White Blood Cells

Blood cells are the defense system of our body they fight against the foreign cells in our body by releasing anti-bodies in our body.

Blood Platelets

These blood cells are also called the external defense system of our body. When there is a wound or injury in our body these platelets become active and make a covering on the wounded region which helps in the clotting of blood which prevents excessive blood loss.

The Parts of The Heart

1. Left Atrium

 

2.Right Atrium

4.Left Ventricle

5.Right Ventricle

6.Inferior & Superior Vena Cava

7.Septum

Circulation of blood through the human heart

The circulation of blood through the human heart is the process that helps us to survive on the earth it makes our organs functionable by supplying their needs through the circulation of blood.

Now, We will learn about the main circulation, The deoxygenated blood comes to the heart from the upper body with the help of the Superior Vena Cava and from the lower body with the help of the Inferior Vena Cava to The Right Atrium and through the Tricuspid Valve it comes to Right Ventricle and from there it goes through The Pulmonic artery passing through The Pulmonic Valve directly to the Lungs for the oxygenation of blood.

In the Lungs when we inhale air to blood in Lungs get diffused with a rich amount of oxygen with the help of Alveoli and the same as we exhale out the carbon dioxide gets separated and goes out from the body. After the blood is filtered it comes to The Left Ventricle

by the help of Pulmonary Veins and goes to the Left Ventricle passing through the Bicuspid Valve and then it goes to all the body parts with the help of the Aorta (the largest artery in the human body).