Which of the following structures is NOT part of the anatomy of the vulva?

The fifth dose of diphtheria vaccine is given to children between the ages of ________

a. 2 and 4 b. 4 and 6 c. 6 and 8 d. 8 and 10

By which of the following routes of administration is insulin usually taken?

a. oral b. subcutaneous c. intramuscular d. rectal