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Organ Systems

study the 12 organ systems of the human body

QuestionAnswer
integumentary system forms the external body covering. protects deep tissues.
muscular system Composed of muscles and tendons Allows manipulation of the environment, locomotion, and facial expression Maintains posture Produces heat
skeletal system Composed of bone, cartilage, and ligaments. Protects and supports body organs. Provides the framework for muscles.
nervous system Composed of the brain, spinal column, and nerves Is the fast-acting control system of the body Responds to stimuli by activating muscles and glands
Endocrine System consists of glands and cell clusters that secrete hormones, regulated development, growth and metabolism; maintains homeostasis
Cardiovascular System Composed of the heart and blood vessels The heart pumps blood The blood vessels transport blood throughout the body
Lymphatic System Composed of red bone marrow, thymus, spleen, lymph nodes, and lymphatic vessels Picks up fluid leaked from blood vessels and returns it to blood Disposes of debris in the lymphatic stream Houses white blood cells involved with immunity
Respiratory System Composed of the nasal cavity, pharynx, trachea, bronchi, and lungs Keeps blood supplied with oxygen and removes carbon dioxide
Digestive System Composed of: oral cavity, esophagus, stomach, small & large intestine, rectum, anus, and liver Breaks down food into absorbable units that enter the blood Eliminates indigestible foodstuffs as feces
Urinary System Composed of kidneys, ureters, urinary bladder, and urethra Eliminates nitrogenous wastes from the body Regulates water, electrolyte, and pH balance of the blood
Male Reproductive System Composed of prostate gland, penis, testes, scrotum, and ductus deferens Main function is the production of offspring Testes produce sperm and male sex hormones Ducts and glands deliver sperm to the female reproductive tract
Female Reproductive System Composed of mammary glands, ovaries, uterine tubes, uterus, and vagina Main function is the production of offspring Ovaries produce eggs and female sex hormones Remaining structures serve as sites for fertilization and development of the fetus
Created by: 100008025465973