INTEGUMENTARY SYSTEM MAJOR FUNCTION: COVERS & PROTECTS TEMP. REGULATION SENSORY MAJOR ORGANS: SKIN HAIR NAILS

SKELETAL SYSTEM MAJOR FUNCTION: SUPPORT PROTECTION MAKE BLOOD CELLS STORAGE MOVEMENT MAJOR ORGANS: BONES JOINTS

MUSCULAR SYSTEM MAJOR FUNCTION: MOVEMENT MAJOR ORGANS: SMOOTH MUSCLE VOLUNTARY INVOLUNTARY MAJOR ORGANS: SMOOTH MUSCLE CARDIAC MUSCLE SKELETAL MUSCLE

NERVOUS SYSTEM MAJOR FUNCTION: ALLOWS BODY TO RESPOND TO STIMULI INTERNAL STIMULI EXTERNAL STIMULI MAJOR ORGANS: BRAIN SPINAL CORD NERVES SENSORY RECEPTORS

CIRCULATORY SYSTEM MAJOR FUNCTION: CIRCULATES BLOOD BLOOD TRANSPORTS: O2, CO2, NUTRIENTS, HORMONES, ETC MAJOR ORGANS: HEART BLOOD VESSELS ARTERIES, VEINS, CAPILLARIES BLOOD

RESPIRATORY SYSTEM MAJOR FUNCTION: GAS EXCHANGE O2 IN CO2 OUT MAJOR ORGANS: LUNGS TRACHEA DIAPHRAGM

EXCRETORY SYSTEM MAJOR FUNCTION: FILTER BLOOD REMOVE WASTE, EXCESS H2O, MAINTAINS pH MAJOR ORGANS: KIDNEY LUNGS SKIN URINARY BLADDER

DIGESTIVE SYSTEM MAJOR FUNCTION: BREAK DOWN FOOD ABSORB NUTRIENTS MAJOR ORGANS: MOUTH ESOPHAGUS STOMACH INTESTINE (SMALL & LRG) LIVER PANCREAS

ENDOCRINE SYSTEM MAJOR FUNCTION: REGULATES BODY SYSTEMS WITH HORMONES MAJOR ORGANS: ENDOCRINE GLANDS HORMONES

REPRODUCTIVE SYSTEM MAJOR FUNCTION: PRODUCE GAMETES (SPERM OR EGG) PRODUCE NEW OFFSPRING MAJOR ORGANS: TESTES OVARIES Testes

IMMUNE SYSTEM MAJOR FUNCTION: PROTECTION FROM PATHOGENS FIGHT OFF PATHOGEN INFECTION MAJOR ORGANS: WHITE BLOOD CELLS LYMPH NODES BONE MARROW