How would you describe “choanal atresia”?

The lighted retractor shown here would likely be used when performing which of the following procedures?

Which of the following topical only drugs is used for its anesthetic and vasoconstrictor properties?

What surgical procedure would require the use of a rosen needle?

Define the term “apnea”

Name the large vessel labeled #18 in the picture above

Name the large cell in the middle of the picture. NOT the cells all around. 

Name the outer structure labeled Letter B 

Name the structure labeled #9

Name the group of blood vessels labeled #3