List of systems of the human body

Part of a series of lists about
Human anatomy
General List of human anatomical features / regions Variations Movements Systems
Structures Arteries Bones Eponymous Foramina Glands Lymphatic vessels Nerves Organs Systems Veins
Muscles Abductors Adductors Depressors Elevators Extensors Flexors External rotators Internal rotators
See also Table of epithelia of human organs Anatomical terminology Index of anatomy articles Outline of anatomy

The main systems of the human body are as follows:

• Clockwise from top left: the integumentary
• skeletal
• nervous
• cardiovascular
• endocrine and muscular systems.

• Clockwise from top left: the lymphatic
• respiratory
• urinary
• reproductive (female
• male) and digestive systems.

1. Cardiovascular / Circulatory system:
   1. 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.
2. Digestive system / Excretory system:
   1. Mechanical and chemical processes that provide nutrients via the mouth, esophagus, stomach and intestines.
   2. Eliminates waste from the body.
3. Endocrine system:
   1. Provides chemical communications within the body using hormones.
4. Integumentary system/ Exocrine system:
   1. Skin, hair, nails, sweat and other exocrine glands.
5. Lymphatic system / Immune system:
   1. The system comprising a network of lymphatic vessels that carry a clear fluid called lymph.
   2. Defends the body against disease-causing agents.
6. Muscular system/Skeletal system:
   1. Enables the body to move using muscles.
   2. Bones supporting the body and its organs.
7. Nervous system:
   1. Collects and processes information from the senses via nerves and the brain and tells the muscles to contract to cause physical actions.
8. Renal system / Urinary system:
   1. The system where the kidneys filter blood.
9. Reproductive system:
   1. The sex organs required for the production of offspring.
10. Respiratory system
    1. The lungs and the trachea that bring air into the body.
11. Vestibular system
    1. The sensory system that provides the leading contribution to the sense of balance and spatial orientation for the purpose of coordinating movement with balance.