Anatomy Which of the following do not enter abdominal cavity from thoracic cavity at the level of T12 vertebra through an opening in the diaphragm? A Right phrenic Nerve B Aorta C Azygos vein D Thoracic duct 💡 Explanation Which of the following do not enter abdominal cavity from thoracic cavity at the level of T12 vertebra through an opening in the diaphragm? ✓ Correct Answer: A. Right phrenic Nerve