Anatomy In a subclan aery block at outer border of 1st rib, all of the following aeries help in maintaining the circulation to upper limb, EXCEPT: A Subscapular aery B Superior thoracic aery C Thyrocervical trunk D Suprascapular aery 💡 Explanation In a subclan aery block at outer border of 1st rib, all of the following aeries help in maintaining the circulation to upper limb, EXCEPT: ✓ Correct Answer: B. Superior thoracic aery