What are the main organ systems in the body?

William B. Salt II., MD
Gastroenterology
There are multiple organ systems at work within you, all of which are in
relationship with one another.

The main organ systems of your body include:

Circulatory system: heart, blood, blood vessels, and lymphatics

Digestive system: esophagus, stomach, small intestine, and colon

Endocrine system: pituitary, thyroid, ovaries, and testes

Immune system: organs (including lymphatics and spleen), special
cells, proteins, and tissues

Integumentary system: skin, hair, nails, and sweat glands

Muscular system: muscles

Nervous system: brain, spinal cord, and nerves

Reproductive system: uterus, penis, ovaries, and testes

Respiratory system: nose, larynx, trachea, diaphragm, bronchi, and
lungs

Skeletal system: bones, cartilage, and joints

Urinary system: kidneys, ureters, urinary bladder, and urethra
Still Hurting? FIND HEALTH! Discover What's Behind Your SYMPTOMS (That Doctors Can't Explain)

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Still Hurting? FIND HEALTH! Discover What's Behind Your SYMPTOMS (That Doctors Can't Explain)

Still Hurting? FIND HEALTH! presents a new model of disease, which empowers readers suffering with pain, symptoms (e.g., fatigue), and symptom syndromes (e.g., irritable bowel, fibromyalgia, chronic...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.