All of the following are examples of entry via the parenteralroute EXCEPTA. injectionB. biteC. surgeryD. hair follicle

Parenteral route means a path by which drug, fluid, poison and other substance brought into contact with body. Any drug whose entry does not reach alimentary canal mainly known as parenteral route.Hair follicles are the tube like organ under layer of dermis of skin. It connected with blood supply for normal growth and development of hair. It divided into three region infundibulum, isthmus and bulb. Hair papilla is connected with blood vessels and erector pili muscle is connected with bulb. So hair follicles is a anatomical structure, it does not transport any material from outside to inside of the body. Hence, Option D (hair follicle) is correct answer.Parenteral route include - subcutaneous (under the skin) intramuscular (in the muscle), intravenous (by vain), intraarterial (by the artery) Reasons for incorrect answers: Option A: injections given under the skin, in vein or artery depending on disease. So it come under parenteral route. Option B: in case of poisonous snake, fangs (poisonous teeth) deliver poison into the body through biting. So it also come under parenteral route. Option C: surgery is also included under parenteral route.