Ima

Definition:

 A human organ system is a group of organs that work together to perform a particular job and keep the body healthy.

Main points:

1. The human body has many organ systems.

2. Each organ system has a special function.

3. Digestive system digests food.

4. Respiratory system helps in breathing.

5. Circulatory system carries blood and oxygen.

6. Nervous system controls body actions.

7. Skeletal and muscular systems help in movement.

8. Excretory system removes waste from the body.

Interesting points:

1. The heart works day and night without rest.

2. The brain controls the whole body.

3. We breathe even when we are sleeping.

4. An adult human body has 206 bones.

5. All organ systems work together like a team.

Fun Fact:

Your brain sends messages faster than a blink of an eye!