1. Body Systems

2. Digestive System:
Function: Taking in nutrients (food), converting them into a form that the body can use, and absorbing these nutrients into circulation.
Organs: mouth, esophagus, stomach, small and large intestines, liver, pancreas

4. Cardiovascular system:
Function: pumps blood to all the body tissues, bringing nutrients, oxygen, and other needed substances. Also carries waste materials away from tissues to points where they can be eliminated.
Organs: Heart and blood vessels (veins and arteries)

6. Respiratory System:
Function: takes in air containing Oxygen and conducts it to the areas designed for gas exchange. Gaseous waste of Carbon Dioxide is released from the body by this system.
Organs: lungs, trachea, oral/nasal cavities, bronchi, diaphragm

8. Nervous System:
Function: controls and coordinates the body functions. Stimuli are received and converted into impulses that are transmitted and understood by the brain.
Organs: brain, spinal cord, nerves,

10. Musculoskeletal system
Muscular System
Function:
Skeletal muscle: Produce movement and provide structure
Smooth muscle: involuntary control
Cardiac muscle: muscles of the heart
Organs: muscles throughout the body.
Skeletal System
Function: basic framework, provides structure
Organs: skeleton consisting of 206 bones and various joints

12. Excretory System: Urinary System:
Function: rid the body of waste products and excess water
Organs: kidneys, ureter, urethra, bladder
Integumentary System
Function: covers and protects the body, also aids in removal of wastes
Organs: skin, hair, nails, sweat/oil glands

14. Lymphatic/Immune System
Function: Transportation of lymph, a fluid containing infection-fighting white blood cells throughout the body.
Organs: thymus, bone marrow, lymph vessels, spleen, lymph nodes

16. Endocrine System:
Function: Hormone production, secretion, and regluation
Organs: pancreas, adrenal gland, thyroid gland, pituitary gland, pineal gland, and reproductive organs

18. Reproductive System:
Function: Sexual reproduction, conception and child bearing
Organs:
Female: ovaries, fallopian tubes,
Male: testes, vas deferens, urethra