This is a list of the main organ systems in the human body.
See main article: Circulatory 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.
See main article: Digestive system and Excretory system. 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.
See main article: Exocrine gland. System that secrete substances through ducts for various functions.
See main article: Integumentary system. The integumentary system comprises skin and its appendages; hair, nails, sweat glands andoil glands.
See main article: 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.
See main article: Muscular system. 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.
See main article: Human reproductive system. The reproductive organs are required for the production of offspring.
See main article: Respiratory system. 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.
See main article: Urinary system.
The urinary system (also known as renal system) filter blood with the help of kidneys to produce urine, and get rid of waste.