1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. 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

10. 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

11. 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