1. Body Systems
Overview

2. Homeostasis
The process of maintaining stable internal conditions is called homeostasis.
our body systems need to all work together in a coordinated fashion in order to maintain homeostasis

3. We have 11 Body Systems

4. Digestive System
Function: to break down food particles into simpler molecules so our body can absorb them
Structures: mouth, pharynx, esophagus, stomach, small intestine, large intestine, gall bladder, pancreas, & liver

5. Nervous System
Function: coordinates all body activities and is the communication between the body and its environment
Structures: brain, spinal cord, & nerves

6. Immune Function: defense against pathogens & foreign agents
Structures: White blood cells, antibodies, bone marrow, lymph nodes

7. Circulatory System
Function: Transports gases (oxygen and carbon dioxide), nutrients, and wastes throughout the body via blood vessels
Structures: vessels (arteries, capillaries, veins), heart, & blood

8. Integumentary System
Function: to cover our body and provide it with protection.
Structures: epidermis & dermis

9. Skeletal System
Function: supports our body, allows for muscle attachment, protects organs, makes blood cells, and is a storage site
Structures: bones

10. Muscular System
Function: allows for voluntary and involuntary movements
Structures: muscles

11. Excretory System Function: help maintain homeostasis of body fluids
Structures: kidneys, ureters, bladder, & urethra

12. Endocrine System Function: to regulate body functions using hormones
Structures: glands, & hormones

13. Respiratory System
Function: breathing, allows for gas exchange via the lungs
Structures: lungs (bronchi, bronchioles, alveoli), diaphragm, trachea, mouth, nose

14. Reproductive System
Function: to produce gametes that can be used to produce offspring
Structures: ovaries, uterus, testes, sperm, eggs