Body Systems

1. body system of organs and tissues that help fight infection
3. location in the body where tow or more bones meet and are held together
5. body system that helps the body move and aids other body systems
7. hollow, muscle organ located in the center of the chest that pumps blood in the circulatory system
8. body system that allows people to think, use the senses, move, and maintain important body process
9. body system formed by all the structures that move blood throughout the body; also known as the cardiovascular system
11. two bean-shaped organs that filter blood and make urine
13. outermost layer of the skin
14. large brown organ that has many jobs, such as making bile
15. body system of organs that obtain vitally important oxygen from the outside world
17. System collection of organs that work together
18. body system that breaks down food to provide nutrients and energy; also removes solid waste from the body
19. exchange of oxygen and carbon dioxide between the body and the air around it

2. organ behind the stomach that make many kinds of enzymes needed for digestion
4. body system that covers and protect the entire body
6. blood vessels that carry oxygen-rich blood
10. blood vessels that carry oxygen-poor blood
12. body system made up of 206 bones that provide structure, shape, and protection to the body
13. body system that produces chemical messengers called hormones to control other endocrine organs
16. body system that removes liquid waste from the body