This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inguinal Hernias, Subject name: Surgery
[{'content': 'Deep inguinal ring is a defect in aponeurosis of: \nSelect and explain. \nA. External oblique muscle of abdomen, B. Internal oblique muscle of abdomen, C. Transverse abdominis muscle, D. Transversalis fascia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Transversalis fasciaRef: Bailey & Love 26th ed. / 955* Deep inguinal ring is the opening in the transversalis fascia through which the ductus deferens and gonadal vessels (or round ligament in the female) enter the inguinal canal.* Located midway between anterior superior iliac spine and pubic tubercle, it is bounded medially by the lateral umbilical fold (inferior epigastric vessels) and inferiorly by the ilio-pubic tract. Indirect inguinal hernias exit the abdominal cavity through the deep inguinal ring.', 'role': 'assistant'}]