Which type of wound has a small opening into the skin, but may be quite deep, and is often caused by instruments such as nails, ice picks, or pencils?

How has public health improved both the quality of life and the life span of humankind?

A) Through research B) Through epidemiology C) Through surveillance D) All of the above

Your patient has suffered a stroke and is having difficulty speaking. Which of the following is the BEST way to communicate with her?

A) Try to use sign language. B) See if she can write. C) Speak more loudly to her. D) Have her nod her head.