This is a list of the main organ systems in the human body.

• Clockwise from top left: integumentary system
• skeletal system
• nervous system
• cardiovascular system
• endocrine system
• (missing exocrine system)
• muscular system

• Clockwise from top left: lymphatic system
• respiratory system
• urinary system
• female reproductive system
• male reproductive system
• digestive system

Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away, as well as keeping the body's temperature in a safe range.

System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, oesophagus, stomach and intestines.

Influences the function of the body using hormones.

System that secrete substances through ducts for various functions.

The integumentary system comprises skin and its appendages; hair, nails, sweat glands and oil glands.

Defends the body against pathogens that may harm the body. The system contains a network of lymphatic vessels that carry a clear fluid called lymph.

Enables the body to move using muscles.

Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.

The reproductive organs are required for the production of offspring.

Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.

Bones maintain the structure of the body and its organs.

The urinary system (also known as renal system) filter blood with the help of kidneys to produce urine, and get rid of waste.

• List of distinct cell types in the adult human body
• List of organs of the human body