For children older than ________ year, a fingerstick is appropriate for blood collection

If 30 gm of active ingredient is mixed with 1,000 mL of normal saline, what is the final concentration (w/v)?

A) 0.03% B) 0.3% C) 3% D) 30%

Arteries have one-way valves that prevent the backflow of blood.

Answer the following statement true (T) or false (F)