Question

which of the following muscles serves as a common intramuscular injection site, particularly in infants as the buttocks and arm muscles are poorly developed?
a) the vastus medialis
b) the vastus lateralis
c) the vastus intermedius
d) rectus femoris

Explanation:

The vastus lateralis is a thick, well - developed muscle. In infants, since the buttocks (gluteal muscles) and arm (deltoid) muscles are not well - developed, the vastus lateralis is a common intramuscular injection site. It is easily accessible, has a large muscle mass, and has fewer major nerves and blood vessels in the area compared to some other muscles.

Answer:

B. the vastus lateralis