Body Systems Unit review

1. Tiny filters in the kidney that remove waste and excess fluid from the blood.
4. Outermost layer of the skin.
6. Involuntary muscles that make up the hollow organs and blood vessels.
7. System that removes cellular waste and excess water from the blood.
9. Gland that is the "master gland", regulates growth.
10. Voluntary muscles attached to bones.
12. System that sends and receives messages throughout the body using neurons.
15. System that provides movement, protection of organs, and helps to warm the body when cold.
18. System that releases hormones to target tissues in the body.
19. Tubes that carry the urine from the kidneys to the bladder.
21. Hollow organ that holds urine.
22. Gland responsible for metabolism and energy.
23. Gland that produces adrenaline to adjust to stress.
24. _______ cord responsible for carrying messages from the brain to the rest of the body and vice versa.
25. Gland responsible for wake/sleep patterns, secretes melatonin.

2. "Master on/off switch" of the endocrine system.
3. Innermost layer of the skin.
5. Bone that protects the heart.
8. nervous system cells that carry messages to and from the brain.
10. System that provides movement/support, protection of the organs, and produces blood cells.
11. System that is like a barrier between the inside of the body and the outside world.
13. Makes insulin to help control blood sugar levels.
14. Bone _______ is found inside bones, where blood cells are created.
16. Involuntary muscles that make up the heart.
17. Tube that carries urine from the bladder to exit the body.
20. Middle layer of the skin.