System

What are the major structures of the circulatory system?

Heart, blood vessels, blood (cardiovascular); lymph nodes and vessels, lymph (lymphatic).

What is the function of the circulatory system?

Transports nutrients, wastes, hormones, and gases.

What are the major structures of the digestive system?

Mouth, throat, esophagus, stomach, liver, pancreas, small and large intestines.

What is the function of the digestive system?

Extracts and absorbs nutrients from food; removes wastes; maintains water and chemical balance.

What are the major structures of the endocrine system?

Hypothalamus, pituitary, pancreas, and many other endocrine glands.

What is the function of the endocrine system?

Regulates body temperature, metabolism, development, and reproduction; maintains homeostasis; regulates other organ systems.

What are the major structures of the excretory system?

Kidneys, urinary bladder, ureters, urethra, skin, lungs.

What is the function of the excretory system?

Removes wastes from blood; regulates concentration of body fluids.

What are the major structures of the immune system?

White blood cells, lymph nodes and vessels, skin.

What is the function of the immune system?

Defends against pathogens and disease.

What are the major structures of the integumentary system?

Skin, nails, hair.

What is the function of the integumentary system?

Protects against injury, infection, and fluid loss; helps regulate body temperature.

What are the major structures of the muscular system?

Skeletal, smooth, and cardiac muscle tissues.

What is the function of the muscular system?

Moves limbs and trunk; moves substances through the body; provides structure and support.

What are the major structures of the nervous system?

Brain, spinal cord, nerves, sense organs.

What is the function of the nervous system?

Regulates behavior; maintains homeostasis; regulates other organ systems; controls sensory and motor functions.

What are the major structures of the reproductive system?

Testes, penis (in males); ovaries, uterus, breasts (in females).

What is the function of the reproductive system?

Produces gametes and offspring.

What are the major structures of the respiratory system?

Lungs, nose, mouth, trachea.

What is the function of the respiratory system?

Moves air into and out of lungs; controls gas exchange between blood and lungs.

What are the major structures of the skeletal system?

Bones and joints.

What is the function of the skeletal system?

Protects and supports the body and organs; interacts with skeletal muscles; produces red blood cells, white blood cells, and platelets.