This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen & Pelvis, Subject name: Anatomy
[{'content': 'Deep inguinal ring is formed in: \nSelect and explain. \nA. Transversus abdominis, B. Transversalis fascia, C. External oblique aponeurosis, D. Internal oblique aponeurosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B Transversalis fascia* Deep inguinal ring is an oval opening formed in transversalis fascia.# It lies about 0.5 inch (1.3 cm) above inguinal ligament midway between anterior superior iliac supine and symphysis pubis.# Medial to deep inguinal ring is inferior epigastric vessels.Extra Mile# Superficial inguinal ring: A triangular shaped opening in the aponeurosis of external oblique muscle and lies immediately above and medial to pubic tubercle.', 'role': 'assistant'}]