1. Human Body Organ Systems

2. The Human body has 11 organ systems – cardiovascular (circulatory), digestive, endocrine, excretory (urinary), immune(lymphatic), integumentary, muscular, nervous, reproductive, respiratory, and skeletal.
Let’s review what we know about them!

3. Cardiovascular (Circulatory) System
Function
Carries oxygen and food to cells
Carries carbon dioxide away from cells
Transports nutrients, chemical messengers, gases, and wastes in the blood
Organs/Structure
Heart
Blood
Blood vessels

4. Respiratory System Function Organs/Structures Mouth Nose Trachea
Adds oxygen to the blood
Removes Carbon Dioxide from the blood
Organs/Structures
Mouth
Nose
Trachea
Bronchi
lungs

5. Digestive System Function Organs/Structures
Breaks down food into units that can be absorbed by the body
Used by the body’s cells for energy
Organs/Structures
Mouth
Esophagus
Stomach
Intestines

6. Endocrine System Function Organs/Structures
Controls cell function with hormones:
Growth
Development
Metabolism
Reproduction
Organs/Structures
pituitary gland
Thyroid
thymus

7. Urinary (Excretory) System
Function
Removes waste from the body
Maintains body fluid volume, pH and electrolyte levels
Organs/Structures
Kidney
bladder

8. Lymphatic (immune) System
Function
Protects the body from disease
Organs/Structures
White blood cells
Spleen
Lymph nodes

9. Integumentary System Function Organs/Structures
Provides a protective barrier for the body
Contains sensory receptors for pain, touch and temperature
Organs/Structures
Skin
Hair
Nails
Sweat and Oil Glands

10. Muscular System Function Organs/Structures
Works with skeletal system to produce movement
Moves bones and maintains structure
Organs/Structures
Skeletal muscles
Smooth muscles
Tendons

11. Skeletal System Function Organs/Structures Supports the body
Works with muscular system to move the body
Protects major organs
Organs/Structures
Bones
Cartilage
Ligaments

12. Nervous System Function Organs/Structures
Controls cell function with electrical signals
Organs/Structures
Brain
Spinal cord
Nerves

13. Reproductive System Function Produces reproductive cells (gametes)
Responsible for producing offspring
Female organs provide environment for development of fetus