The functions of heart are :1.Pumping of blood2.Transport of food to cells3.Transport of oxygen to cells4.Transport of carbon dioxide to lungs.

Introduction to the Heart
The heart is a vital organ in the human body, responsible for pumping blood and maintaining circulation. It ensures that oxygen and nutrients reach every cell while also removing waste products.
Structure of the Heart
- The heart is divided into four chambers:
- Right Atrium: Receives deoxygenated blood from the body.
- Right Ventricle: Pumps deoxygenated blood to the lungs for oxygenation.
- Left Atrium: Receives oxygenated blood from the lungs.
- Left Ventricle: Pumps oxygenated blood to the rest of the body.
Functions of the Heart
- Circulation of Blood
- The heart pumps blood throughout the body, delivering essential nutrients and oxygen.
- Oxygenation
- Blood travels to the lungs where it picks up oxygen and releases carbon dioxide. The heart manages this process seamlessly.
- Waste Removal
- As blood circulates, it collects waste products from cells, which are then transported to excretory organs for elimination.
Heartbeat Regulation
- The heart has a natural pacemaker called the SA Node (Sinoatrial Node) that initiates the heartbeat.
- Electrical impulses travel through the heart muscle, causing it to contract and pump blood.
Conclusion
Understanding the heart's structure and functions is crucial for appreciating its role in maintaining life. It is essential for students to grasp how this organ contributes to their overall health and well-being.