The Human Body -

Consisting of the brain and spinal cord, it acts as the processing hub.

Once the nutrients are absorbed, the (including the kidneys and bladder) filters the blood to remove waste and maintain the body’s delicate water and salt balance. 5. The Invisible Shield: The Immune System The Human Body

To keep cells alive, the body needs a constant supply of oxygen and nutrients. Consisting of the brain and spinal cord, it

This is the gateway for oxygen. Through the lungs, the body exchanges carbon dioxide (a waste product) for fresh oxygen, which is then picked up by red blood cells and delivered to every corner of the body. 4. Energy and Maintenance: Digestive and Excretory Systems The Human Body