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| Part of a series of lists about |
| Human anatomy |
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This is a list of the main organ systems in the human body.
Circulatory system/cardiovascular 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.
Digestive system/excretory system
System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, oesophagus, stomach and intestines.
Endocrine system
Influences the function of the body using hormones.
Integumentary system/exocrine system
System that comprises skin, hair, nails, and sweat and other exocrine glands.
Immune system/lymphatic system
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.
Muscular system
Enables the body to move using muscles.
Nervous system
Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.
Renal system/urinary system
The system where the kidneys filter blood to produce urine, and get rid of waste.
Reproductive system
The reproductive organs required for the production of offspring.
Respiratory system
Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.
Skeletal system
Bones maintain the structure of the body and its organs.
- Clockwise from top left: integumentary system
- skeletal system
- nervous system
- cardiovascular system
- endocrine system
- muscular system
- Clockwise from top left: lymphatic system
- respiratory system
- urinary system
- female reproductive system
- male reproductive system
- digestive system