organ systems

Integumentary system

Organ system that includes the skin and its accessory structures

Skeletal system

Organ system that includes the bones, and the ligaments, and cartilages that hold them together

Muscular system

Organ system including skeletal muscles

Nervous system

Organ system that includes the brain, spinal cord, nerves, and sense organs

Endocrine system

Organ system including glands that secrete hormones into the blood

Cardiovascular system

Organ system including the heart and blood vessels

Lymphatic system

Organ system including lymphatic vessels, lymph nodes, thymus, spleen, and a fluid called lymph. It plays a role in the body’s defense against infection.

Digestive system

Organ system including the mouth, tongue, teeth, salivary glands, pharynx, esophagus, stomach, liver, gallbladder, pancreas, small intestine, and large intestine

Respiratory system

Organ system that obtains oxygen for the body cells and removes CO2. Nasal cavity, pharynx, larynx, trachea, bronchi, and lungs are parts of this system

Urinary system

Organ system including kidneys, ureters, urinary bladder, and urethra

Reproductive system

Organ systems in the male and female that work together to produce offspring. Male reproductive system includes scrotum, tested, epididymides, ductus deferentia, seminal vesicles, prostate gland, bulbourethal gland, penis, and urethra. Female includes: ovaries, uterine tubes, uterus, vagina, clitoris, and vulva.