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
In distal subclan & proximal axillary aery block aerial anastomosis exists between 1st pa of SCA&3RD pa OF axillary aery Ref: Gray's 40e/p447-451
Subscapular aery
Superior thoracic
Thyrocervical trunk
Suprascapular aery
General anatomy