Integumentary system

Organs: Skin, hair, nails and associated glands. Functions: Protects underlying tissues and helps regulate body temperature.

Skeletal system

Organs: Bones, ligaments and associated cartilages. Functions: Supports the body, protects important organs, stores minerals and is the site of blood cell production.

Muscular system

Organs: Skeletal muscles and tendons. Functions: Moves the body and its parts, also produces heat.

Respiratory System

Organs: Nose, pharynx, trachea, bronchi and lungs. Functions: Exchanges O2 and CO2 between air and blood in the lungs, pH regulation, and sound production.

Cardiovascular system

Organs: Blood, heart, arteries, veins and capillaries. Functions: Transports heat and materials to and from the body cells.

Lymphoid system

Organs: Lymph, lymphatic vessels, and lymphoid organs and tissues. Functions: Collects and cleanses interstitial fluid, and returns it to the blood; provides immunity.

Urinary system

Organs: Kidneys, ureters, urinary bladder and urethra. Functions: Regulates volume and composition of blood by forming and excreting urine.

Endocrine system

Organs: Hormone producing glands, such as the pituitary and thyroid glands. Functions: Secretes hormones that regulate body functions.

Nervous System

Organs: Brain, spinal cord, and sensory receptors. Functions: Rapidly coordinates body functions and enables learning and memory.

Digestive System

Organs: Mouth, pharynx, esophagus, stomach, intestines, liver, pancreas, gallbladder and associated structures. Functions: Digests food and absorbs nutrients.

Male Reproductive System

Organs: Testes, epididymides, vasa differentia, prostate, bulbo-urethral glands, seminal vesicles and penis. Functions: Produces sperm and transmits them into the female vagina during sex.

Female Reproductive Systems

Organs: Ovaries, uterine tubes, uterus, vagina and vulva. Functions: Produces oocytes, receives sperm, provides intrauterine development of offspring, and enables birth of an infant.