Organ Systems Structures and Functions

Circulatory System Structures

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

Digestive System Structures

Mouth, throat, esophagus, stomach, liver, pancreas, small and large intestine

Endocrine System Structures

Hypothalamus, pituitary gland, pancreas, thyroid gland, adrenal glands, parathyroid glands, and gonads (ovaries and testes)

Excretory System Structures

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

Immune System Structures

White blood cells, lymph nodes and vessels, skin

Integumentary System Structures

Skin, nails, hair

Muscular System Structures

skeletal, smooth, and cardiac muscle tissues

Nervous System Structures

Brain, spinal cord, nerves, sense organs

Reproductive System Structures

Male: Testes and penis

Female: Ovaries, uterus, vagina, fallopian tubes, breasts

Respiratory System Structures

Lungs, nose, mouth, trachea

Skeletal System Structures

Bones and joints

Circulatory System Function

Transports nutrients, wastes, hormones, and gases

Digestive System Function

Extracts and absorbs nutrients from food; removes wastes, maintains water, and chemical balances

breaks down food into fatty acids, amino acids, and sugars through digestion

Endocrine System Function

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

Excretory System Function

Removes wastes from blood; regulates concentration of body fluids (maintains electrolyte balance and blood pressure?)

Immune System Function

Defends against pathogens and disease

Integumentary System Function

Protects against injury, infection, and fluid loss; helps regulate body temperature; the outside of the organism

Muscular System Function

Moves limbs and trunk; moves substances through body; provides structure and support (can generate heat due to muscle contraction?)

Nervous System Function

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

Reproductive System Function

produces gametes and offspring

Respiratory System Function

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

Skeletal System Function

Protects and supports the body and organs; interacts with skeletal muscles, produces red blood cells, white blood cells, and platelets in bone marrow; stores minerals.