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Major Organ Systems
Major Organ Systems, structures, and functions
Organ System | Organs and Structures | Function |
---|---|---|
Integumentary system | Skin, hair, nails, duct glands | Protects the organism from injury, disease, and infection; aids in the regulation of temperature, the excretion of wastes, and the reception of sensations |
Skeletal system | Bones, joints, cartilage, connective tissue | Provides the framework for the body and works to protect and support the body |
Muscular system | Skeletal, smooth, and cardiac muscles | Provides for body movement and support |
Nervous system | Brain, spinal cord, peripheral nerves | Coordinates body activities by receiving, interpreting, and conducting messages to all other systems of the body |
Special Senses | Eyes, ears, nose, taste buds | Function in receiving sensations such as sight, smell, hearing, and taste |
Digestive system | Mouth, pharynx, esophagus, stomach, large and small intestines, accessory organs such as the gallbladder and pancreas | Receives, breaks down, and absorbs food substances and excretes waste products |
Circulatory system | Heart, blood vessels, blood, lymphatic tissues | Transports materials throughout the body by carrying oxygen and nutrients in the blood to all the cells of the body and carrying away the wate products of the cells |
Respiratory system | Lungs, nose, pharynx, larynx, trachea | Takes in oxygen from the air and gives off carbon dioxide, which is produced by cell metabolism |
Urinary system | Kidneys, ureter, bladder, urethra | Serves in removing waste products from the bood and in excreting wastes in the form of urine |
Reproductive system | Sex organs and ducts to the outside | Involved with reproduction and childbirth |
Endocrine system | Ductless glands, such as the tyroid and pituitary | Serves to regulate various body functions through glands that secrete hormones directly into the blood to slow down or increase the activity of the cells |
Immune system | White blood cells, antibodies | Provides protection against disease and infection |