The key organs include:

1. Brain – Oversees thought, movement, and coordination.
2. Heart – Pumps blood and maintains circulation.
3. Lungs – Facilitate the exchange of oxygen and carbon dioxide.
4. Liver – Metabolizes nutrients and detoxifies the blood.
5. Kidneys – Filter wastes from the blood and regulate fluids.
6. Stomach and Intestines – Process food and absorb nutrients.

These organs work together, each playing a vital role in sustaining life and contributing to the body’s overall harmony.