In infants, scalp veins can provide a reliable venous access that is easy to obtain and even easier to maintain.

If you mix 3 gm of active ingredient with 10 gm of ointment base, the resulting concentration is:

A) 33%. B) 23%. C) 30%. D) 0.3%.

A direct anastomosis between an artery and a vein is called a(n) ________

A. hemodialysis fistula C. hemodialysis graft B. arteriovenous graft D. AV fistula