organ systems

2. outer protection of the body
3. transport blood throughout the body
6. produces egg and sperm cells
8. fights invading germs in the blood
9. plays a major role in the metabolism, growth and development of the human body
10. gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals.
11. allow us to breathe
15. composed of specialized cells called muscle fibers. Their predominant function is contractibility
17. regulates all biological processes in the body from conception through adulthood and into old age
18. maintains fluid levels in our body tissues by removing all fluids that leak out of our blood vessels
19. pumps blood throughout the body
20. Temporarily store food. Contract and relax to mix and break down food
21. remove wastes and extra fluid from your body

1. breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair.
4. produce sperm
5. provides shape and support for the body, as well as protection for some organs
7. body temperature regulation, cell fluid maintenance, synthesis of Vitamin D, and detection of stimuli.
12. helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body.
13. delivers oxygen and nutrients to cells and takes away wastes
14. moves fresh air into your body while removing waste gases
16. controls thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger and every process that regulates our body.
17. maintain the volume and composition of body fluids within normal limits