Nervous System -Neurons: Dendrites & axons Function Organs / Structures -Neurons: Dendrites & axons -Central Nervous System: Brain & spinal cord -Peripheral Nervous System: -Allow organisms to respond to stimuli in the its environment and maintain homeostasis -controls heart rate and breathing -nerve cells called neurons -nerves are throughout the entire organism Nervous System Picture Relationship to Other Systems Nerve cell -Integumentary System – Sense of touch -Respiratory System - Involuntary breathing -Muscular System – Impulse to contract Peripheral system Central system

Integumentary System -epidermis Function Organs / Structures -epidermis -dermis -hair -protects the individual from the environment Integumentary System Picture Relationship to Other Systems -Covers all other systems -Endocrine System – Hormones determine oil secretion to skin

Respiratory System -Allows the organism to exchange gases Function Organs / Structures -Allows the organism to exchange gases -CO2 & oxygen Nose Mouth Lungs bronchus Bronchioles alveoli Respiratory System Picture Relationship to Other Systems -Muscular System – Uses O2 -Circulatory System – Circulates O2/ CO2 -Nervous System – “Fight or Flight” Affects breathing

Digestive System Absorb nutrients from food Eliminate solid waste Function Organs / Structures Absorb nutrients from food Eliminate solid waste Mouth-mechanical digestion Stomach-chemical digestion Esophagus Stomach Small and large intestine Pancreas, galbladder & liver Digestive System Picture Relationship to Other Systems -Excretory System – Eliminates nitrogenous wastes produced -Circulatory System – Moves nutrients through body -Endocrine System – Hormones allow organs to function/digest properly, metabolism, hunger

Excretory System Eliminates nitrogenous waste through sweat, urine Function Organs / Structures Eliminates nitrogenous waste through sweat, urine Skin Lungs Kidneys Ureters Urinary bladder urethra Excretory System Picture Relationship to Other Systems -Circulatory System – Filters nitrogenous wastes from blood in kidneys - Lymphatic System – Maintains water balance in blood

Skeletal System -Protect internal organs, allow movement and support Function Organs / Structures -Protect internal organs, allow movement and support -produce red blood cells 206 bones, joints and cartilage, ligaments Skeletal System Picture Relationship to Other Systems -Muscular System – Provides support, creates movement -Circulatory System – Circulates RBCs

Muscular System Skeletal muscle: movement muscle has striations Function Organs / Structures Skeletal muscle: movement muscle has striations Cardiac muscle: only found in the heart; contracts based on the heart’s pacemaker Smooth: regulates blood flow, moves food through the digestive tract, empties the bladder Muscle: myosin and actin Muscular System Picture Relationship to Other Systems -Circulatory System – Circulates O2 to muscles (heart is composed of cardiac muscle) -Skeletal System – Creates movement

Function Organs / Structures Moves waste, nutrients and oxygen through the organism Heart, arteries, veins, capillaries Circulatory System Picture Relationship to Other Systems -Endocrine System – Circulates hormones -Lymphatic System – Returns fluids to circulatory system -Digestive System – Brings nutrients to places needed Veins:carry oxygen depleted blood to the heart Arteries: carry oxygen rich blood from the heart

Function Organs / Structures Makes and sends chemical messages to target organs that allow an organism to grow, develop and maintain homeostasis -Glands and hormones -hypothalamus -pituitary gland -thyroid -thymus -adrenal glands -pancreas -male: testes -female: ovaries Endocrine System Picture Relationship to Other Systems -Reproductive System – Onset of puberty, menstrual cycle

Reproductive System Produce more of the same species Function Organs / Structures Produce more of the same species Male: produce sperm cells and deliver them to the female reproductive system Female: produce eggs and provides space for the fertilized egg to devolp Male: testes, vas deferens, prostate gland, penis, urethra, scrotum, epididymis Female: uterus, cervix, urethra, ovary, fallopian tube, vagina Reproductive System Picture Relationship to Other Systems Male Reproductive System See Other previous relationships Female Reproductive System

Lymphatic / Immune System Function Organs / Structures -fights off infections and pathogens -travel through the lymphatic and circulatory systems to fight infections that enter the body -Skin -Mucous membranes and cilia -White blood cells: phagocytes, T cells, B cells -antibodies Lymphatic / Immune System Picture Relationship to Other Systems See other previous relationships