b. insert the needle at a 45-degree angle. c. pull back on the plunger after inserting the needle. d. pull the skin taut at the injection site when inserting the needle. 4. which site is most commonly used for intramuscular injections? a. ventrogluteal b. abdominal c. deltoid d. dorsogluteal 5. which action by the nurse helps to ensure that the medication is delivered into the muscle when administering an intramuscular injection? a. using a 1-inch needle b. inserting the needle at a 45- to 60-degree angle