Muscle Systems

2. A voluntary muscle.
4. What is a purpose for the skeletal system?
5. The number of types of bones there are.
6. The largest artery in the body.
8. Another name for circulatory system.
10. Air cells of the lung.
11. A energy needed for muscle contraction.
15. A odorless gas formed as a waste product within the lungs.
16. When neuroglia divide in a faulty and over abundant way.
18. A connective tissue that surrounds muscle fibers.
20. Cells that protect neurons.
21. What is another name for the skeletal system?
22. Small branch of the bronchi within the lung.
24. Cells that transmit electrical “messages” to different parts of the body.
25. End of neurons that release neurotransmitters.

1. The way muscle contraction is regulated.
3. A chronic disease of the bronchi.
7. What is the process by which a bone forms?
9. Condition caused by a lack of oxygen intake.
12. Something the skeletal system is made up of.
13. The wall of tissue that splits the heart in half.
14. A type of muscle.
17. A hollow, muscular organ.
19. What is a main task muscles do.
23. The subdivision of the nervous system including the brain and spinal cord.