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 rich anastomoses exists around the scapula between branches of subclan aery (first pa) & the axillary aery (third pa).This anastomoses provides a collateral circulation through which blood can flow to the limb when the distal pa of subclan aery or the proximal pa of axillary aery is blocked.
Subscapular aery
Superior thoracic
Thyrocervical trunk
Suprascapular aery