What is an osteon?

Near joints in the hands, dermal folds help secure the skin to the underlying joints.  This creates deep creases on the palms.  These folds are called flexure lines. 

Two of the functions of the adult bone are to store calcium and fat.

Which of the following is a bone disorder characterized by excessive and haphazard bone deposit and resorption?

The sun presents many challenges to the skin.  Name two.

Cells of the stratum spinosum have many interlocking desmosomes that will remain between the cells as they migrate to the stratum corneum. These cell junctions serve the body by 

A  patient presents to you with an 8 mm x 12 mm irregular black lesion on her right forearm.  Which would be the most useful rule to use to assist in your diagnosis?

A flat bone, like the parietal bone, has both compact and spongy bone. 

A converging lens, such as magnifying glass A. always produces an upright image B. always produces a magnified image (larger) C. always produces an inverted image D. none of these are true  

A light beam coming from an under a transparent medium exits the medium whose index of refraction is n = 1.53 at an angle of 43.0o with the normal.  At what angle of incidence did it hit the air-medium interface from below the surface. A simple diagram should help. n = 1.00 (air).  Answer to 3 s.f.