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