This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
In postductal coarctation of aoa, collaterals may be formed by all of the following, except 
Select and explain. 
A. Veebral aery, B. Suprascapular aery, C. Subscaular aery, D. Posterior Intercostals aery
A: Veebral aery
Answer: A: Veebral aery 
Explanation: In post-ductal coarctation of the aoa, an extensive collateral circulation develops involving the branches of subclan & axillary aeries with the distal aeries given by aoa Veebral aery does not play a significant role in this collateral circulation. Ref: Gray's 40e/p984