The 12 Systems - H A & PI

Lymphatic System

- returns fluid to blood - defends against pathogens thymus, lymph nodes, spleen, lymphatic vessels

Respiratory System

- removes carbon dioxide from the body - delivers oxygen to the body nasal passage, trachea, lungs

Muscular System

- enables movement (with skeletal system) - helps maintain body temperature skeletal muscles, tendons

Nervous System

- detects and processes sensory information - activates bodily responses brain, spinal cord, peripheral nerves

Integumentary System

- encloses internal body structures - site of many sensory receptors hair, skin, nails

Skeletal System

- supports the body - enables movement (with muscular system) cartilage, bones, joints

Endocrine System

- secretes hormones - regulates body processes pituitary gland, thyroid gland, pancreas, adrenal glands, testes, ovaries

Cardiovascular System

- delivers oxygen and nutrients to tissues - equalizes temperature in the body heart, blood vessels

Digestive System

- processes food for use by the body - removes wastes from undigested food stomach, liver, gall bladder, large intestine, small intestine

Urinary System

- controls water balance in the body - removes wastes from blood and excretes them kidneys, urinary bladder

Male Reproductive System

- produces sex hormones and gametes - delivers gametes to female epididymis, testes

Female Reproductive System

- produces sex hormones and gametes - supports embryo/fetus until birth - produces milk for infant mammary glands, ovaries, uterus