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Human Organ Systems Overview

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  • Integumentary system function
    Covers and protects tissues from injury.
  • Integumentary system structures
    Hair, nails, skin.
  • Skeletal system function
    Protects and supports body organs.
  • Skeletal system structures
    Bones, joints.
  • Muscular system function
    Allows manipulation of environment, locomotion, and facial expression.
  • Muscular system structures
    Muscles.
  • Nervous system function
    Fast acting control system for the body.
  • Nervous system structures
    Brain, spinal cord, nerves.
  • Endocrine system function
    Glands secrete hormones to regulate growth, reproduction, and nutrient use.
  • Endocrine system structures
    Thyroid, pineal, pituitary, thymus, adrenal, pancreas, ovary, testis.
  • Cardiovascular system function
    Blood vessels transport blood carrying oxygen, carbon dioxide, nutrients, and waste; heart pumps blood.
  • Cardiovascular system structures
    Heart, blood vessels.
  • Lymphatic system function
    Picks up fluid leaked from blood vessels, disposes debris, houses white blood cells, and mounts immune response.
  • Lymphatic system structures
    Red bone marrow, thymus, lymphatic vessels, thoracic duct, spleen, lymph nodes.
  • Respiratory system function
    Keeps blood supplied with oxygen and removes carbon dioxide; gas exchange in lungs.
  • Respiratory system structures
    Nasal cavity, pharynx, larynx, trachea, lung, bronchus.
  • Digestive system function
    Breaks down food for distribution to body cells; eliminates foodstuffs as feces.
  • Digestive system structures
    Oral cavity, esophagus, liver, stomach, small intestine, large intestine, rectum, anus.
  • Urinary system function
    Eliminates waste from body; regulates water, electrolyte, and acid-base balance of blood.
  • Urinary system structures
    Kidney, ureter, urinary bladder, urethra.
  • Reproductive system function
    Produces offspring, sperm/egg, sex hormones, and milk.
  • Male reproductive system structures
    Prostate, penis, testis, scrotum, ductus deferens.
  • Female reproductive system structures
    Mammary glands, ovary, uterus, vagina, uterine tube.