Body systems

1. organs in the endocrine system that releases hormones
4. type of tissue that provides support and connects all the parts
5. all the bones of the body
8. condition in which an organism's internal environment is kept stable
10. basic unit of structure and function in a living thing
11. type of tissue that covers the surfaces of your body, inside and out
14. reaction to a stimulus
16. process through which nutrients move from the digestive system to the bloodstream
17. structure made up of different kinds of tissue that perform a specific job
18. membrane outside border of cell that controls that enters and leaves the cell

2. substance that you get from food that your body needs to carry out processes
3. attached to bones and provide the force that moves your bones
6. type of tissue that can contract and shorten and makes parts of your body move
7. place in your body where 2 bones meet
9. directs the cell's activities and holds information that controls a cell's function
12. a group of similar cells that perform the same function
13. type of tissue that carries electrical messages back and forth between the brain and other parts of the body
15. signal in the environment that makes you react