You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is VAN (vein, artery, nerve) sequence is present in intercostal space at: and explain in detail?
Ans. C Lower border of ribRef: Snell's Clinical Anatomy, pg. 41* There are 11 intercostal spaces within the thoracic wall. The spaces are tilled in by 3 layers of intercostal muscles and their related fasciae and are bounded superiorly and inferiorly by the adjacent ribs.* The costal groove is located along the inferior border of each rib (upper aspect of the intercostal space) and provides protection for the vein which is most superior and the nerve which is inferior in the groove (VAN).