# Wikijunior:Biology/Systems


`__NOTOC__`


## Organ systems

!A diagram of the reproductive system in
women{width="250"}
Two or more organs that work together make up an **organ system**.

Organ systems are found in all different kinds of living things.

Some of the organ systems found in humans include:

-   Circulatory
    system
-   Respiratory
    system
-   Digestive system
-   Endocrine system
-   Reproductive
    system
-   Urinary system
-   Immune system
-   Muscular system
-   Skeletal system
-   Integumentary
    system
-   Nervous system

