[sc name=”block-before-question”]

Page 1 of 1

1. A 5-year-old boy falls off his bike and fractures his humerus. He is taken to the emergency room, and the bone is set by one of the emergency room physicians. Which of the following is responsible for producing the majority of the new bone that will reunite the two fragments?
A.
B.
C.
D.
E.


 

[sc name=”block-after-question”]