Organ Systems of the Body

• Cardiovascular System

• Composed of the heart and blood vessels

• The heart pumps blood

• The blood vessels transport blood throughout the body

• Digestive System

• Composed of the oral cavity, esophagus, stomach, small intestine, large intestine, rectum, anus, and liver

• Breaks down food into absorbable units that enter the blood

• Eliminates indigestible foodstuffs as feces

• 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

• Mammary glands produce milk to nourish the newborn

• Integumentary System

• Forms the external body covering

• Composed of the skin, sweat glands, oil glands, hair, and nails

• Protects deep tissues from injury and synthesizes vitamin D

• 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

• 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

• Muscular System

• Composed of muscles and tendons

• Allows manipulation of the environment, locomotion, and facial expression

• Maintains posture

• Produces heat

• 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

• Respiratory System

• Composed of the nasal cavity, pharynx, trachea, bronchi, and lungs

• Keeps blood supplied with oxygen and removes carbon dioxide

• Skeletal System

• Composed of bone, cartilage, and ligaments

• Protects and supports body organs

• Provides the framework for muscles

• Site of blood cell formation

• Stores minerals

• 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

Source: https://www.facebook.com/teacherceppee/