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Organ Systems

Organ Systems. Organ – specialized tissues that work to perform a more complex function System – group of organs that work to perform a more complex function 11 major organ systems of the body. Integumentary. Crucial to survival Primary function – protection

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Organ Systems

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  1. Organ Systems • Organ – specialized tissues that work to perform a more complex function • System – group of organs that work to perform a more complex function • 11 major organ systems of the body

  2. Integumentary • Crucial to survival • Primary function – protection • Skin I s largest organ in system (20lbs) • Accessory organs – nails, hair • Includes glands

  3. Skeletal • 206 bones • Includes cartilage and ligaments • Function: support and protection • Bones store essential minerals • Formation of blood cells in bone marrow

  4. muscular • Skeletal muscles – voluntary, contraction • Smooth – visceral – involuntary • Cardiac – involuntary – heart • Function: produce movement, maintain body posture • Generates heat

  5. Nervous • Brain, spinal cord, nerves • Function: communication, integration, and control of body functions

  6. Endocrine • Composed of specialized glands that secrete chemicals (hormones) • Function – communication (slow but long lasting) • Organs include pituitary gland, pineal gland, hypothalmus, thyroid, parathyroid, thymus, adrenal, pancreas and ovaries/testes

  7. Circulatory • Heart and vessels • Closed system of arteries, veins and capillaries. • Function- transportation (oxygen, carbon dioxide, nutrients and hormones)

  8. Lymphatic • Lymph nodes and vessels • Lymph tissue • Organs – tonsils, thymus, spleen • Function – movement of fluids and molecules, immune system

  9. Respiratory • Organs – nose, pharynx, larynx, trachea, bronchi, lungs • Function: permit movement of air

  10. Digestive • Function: proper digestion and absorption of nutrients • Organs: mouth – pharynx- esophagus- stomach- small intestine – large intestine, rectum- anal canal • Accessory organs – teeth, salivary glands, tongue, liver, gall bladder, pancreas, appendix

  11. Urinary • Waste product is urine • Kidney – ureter- bladder – urethra • Filter

  12. Reproductive • Survival of species, produce hormones • Male – Testis - produce, transfer and introduce sperm to female • Female – ovaries – produce eggs

  13. Organ replacement • Loss of vital organs – life threatening • Loss of non-vital organs – can live without • Options for loss of organs • Artificial organs • prosthesis • Organ transplantation • Kidney, pancreas, heart, lungs, Small intestines • Free-flap surgery • tissues from body remodeled and grafted to new part of body • Stem cell treatment • Growing new tissues or organs

  14. Organ donation • http://www.organdonor.gov/

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