1. Introduction to Human Body Systems

2. Circulatory 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 macromolecules and absorbs necessary nutrients
Major organs: Stomach, L.I., S.I.
Liver serves multiple functions for multiple systems (but is considered part of DS)

5. Reproductive System
Role: Producing offspring; regulating sexual characteristics
Major organs: Testes, Uterus, Ovaries

6. Skeletal System Provides body structure and support
Bone marrow creates new blood cells for circulation;also stores lipids
Major organs: bones, cartilage

7. Muscular System Role: allows for movement
Major organs: skeletal muscle

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

9. Integumentary System
Role: Protects body; transfer of heat; sensory reception
Major organs: skin, nails
Releases sweat, and heat from blood, to help control body temperature

10. Endocrine System
Role: Circulates hormones around the body to control body functions; maintains homeostasis
Major organs: Pituitary, Thyroid, Adrenals, Pancreas,hypothalmus

11. Lymphatic System
Role: Works to help maintain ciculatory system as well as housing cells responsible for immunity
Major organs: Lymph nodes

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