Humans as Organisms

Humans are living organisms made up of many cells working together.
Each part of the body has a special job, but all parts work as one system to keep us alive and healthy.

Our bodies:

• Take in food and oxygen for energy

• Remove wastes we don’t need

• Sense and respond to the world around us

• Grow and repair when damaged

Inside us, organs and systems like the heart, lungs, brain, and stomach all work together — just like a team — to keep life going.

In this topic, you’ll learn how these systems connect and how your body functions as one amazing living organism.