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7.12B Body Systems
Identify the main functions of the systems of the human organism.
Term | Definition |
---|---|
Circulatory System | Distributes blood to carry oxygen and nutrients to cells all over the body and carries away carbon dioxide and waste. Major Organs: Heart, blood vessels, blood |
Respiratory System | Absorbs oxygen and releases carbon dioxide. Major Organs: Lungs, trachea, bronchioles |
Digestive System | Breaks down food and absorbs nutrients. Major Organs: Stomach, intestines |
Nervous System | Controls the body's actions and responds to changes. Also includes the five senses. Major Organs: Brain, spine, nerves |
Skeletal System | Gives body structure needed for movement and protects internal organs. Produces blood cells in bone marrow. Main Organs: Bones, cartilage |
Muscular System | Responsible for voluntary and involuntary movement. Main Organs: Muscle tissue |
Endocrine System | Glands that produce hormones to maintain balance and control development. Main Organs: Thyroid, pituitary, adrenal, reproductive organs |
Integumentary System | A protective barrier around your body that helps prevent water loss and control body temperature. Major Organs: Skin, hair, nails |
Immune System | Antibodies and white blood cells that protect your body from infection. Major Organs: Spleen, bone marrow, thymus, lymph nodes |
Reproductive System | Produces gamete cells (eggs and sperm) needed for sexual reproduction. Major Organs: Vagina, uterus, ovaries, penis, testes |
Excretory System | Removes waste from the body and helps prevent buildup of excess fluid. Major Organs: Kidneys, ureters, bladder |