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human body systems

List of systems of the human body


Anatomical Male Figure Showing Heart, Lungs, and Main Arteries.jpg
Part of a series of lists about
Human anatomy
The main systems of the human body are:
  1. Cardiovascular system / 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 pathogenic viruses that may endanger the body .
  6. Muscular system
    1. Enables the body to move using muscles.
  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. Skeletal system
    1. Bones supporting the body and its organs.

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