List of systems of the human body

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The major systems of the human body are as follows (names of auxiliary/supporting systems in italics):




Integumentary system 
Skin, hair, nails, sweat and other exocrine glands.



Skeletal system 
Bones supporting the body and its organs.



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



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.



Endocrine system 
Provides chemical communications within the body using hormones.



Muscular system 
Enables the body to move using muscles.


Lymphatic system 
Supplies and drains lymph fluid in support of the cardiovascular and immune systems.



Respiratory system 
The lungs and the trachea that bring air into the body.



Urinary system 
Part of the excretory system.



Excretory system 
Eliminates waste from the body.



Reproductive system 
The sex organs required for the production of offspring.



Digestive system 
Mechanical and chemical processes that provide nutrients via the mouth, esophagus, stomach and intestines.



Immune system 
Defends the body against disease-causing agents.