Wikijunior:Biology/Systems

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