1. __________ is a vitamin that sunlight on the skin typically triggers within the body.

2. The specific cell type that produces bone tissue is called _____________.

3. The four components of a negative feedback loop ________ _______ _______ ______.

4. Synovial joints of the body are classified as __________ joints.

5. During muscle metabolism if oxygen is not present pyruvic acid is converted to ___________.

6. A cancer that results in abnormal production of white blood cells is ___________.

7. A gentle touch is detected by touch receptors called ___________.

8. Your skin is part of the ____________ system.

9. The rib cage primarily protects the _______ and ________.

10. __________ is basically the diffusion of water from regions of higher concentration to regions of lower concentration. It aids in blood pressure regulation.

11. Cortosol, corticosterone, and cortisone are in what chemical class of endocrine glands? ______________.

12. Bleach has a pH of 13 is it considered an acid or base? ____________.

13. The system that includes the spinal cord is the ____________system.

14. The fluid that circulates around the brain and spinal cord is called __________.

15. Inflammation of the brain is called __________.