1. Introduction to Human Body Systems

2. Circulatory/Cardiovascular system
Role: Transports substances throughout the body
Circulates oxygen, CO2 heat, water, nutrients, wastes
Major organs: Heart, Arteries, Veins

3. Excretory System
Role: Filters wastes from blood; maintains bodies internal nutrient balances
Also rids body of wastes via urethra
Major organs: Kidneys, Urethra, Bladder

4. Digestive System
Role: Breaks down food and absorbs necessary nutrients
Major organs: Stomach, Large Intestine, Small Intestine

5. Skeletal System Provides body structure and support
Bone marrow creates new blood cells
Major organs: bones, cartilage

6. Muscular System Role: allows for movement
Major organs: skeletal muscle, smooth muscle, cardiac (heart) muscle

7. Nervous System Control system of body
Major organs: Brain, Spinal cord, nerves
Stimulates heart rate and controls blood oxygen levels

8. Immune System
Role: defend against infectious organisms and other invaders
Major organs: thymus, bone marrow, liver

9. Respiratory System Ventilation system for body
Major organs: lungs, diaphragm, trachea
Takes in oxygen and releases carbon dioxide from blood