Artery not involved in Vascular anastemosis around Acromian
Acromial Branch of Thyrocervical Trunk (Branch of 1st part of Subclavian artery).
Acromial Branch of Thoracoacromial trunk (Branch of 2nd part of Axillary artery).
Acromial branch of  posterior circumflex humeral artery form anastomosis around Acromian.
Thyrocervical Trunk
Thoracoacromial trunk
Anterior circumflex humeral artery
Posterior circumflex humeral artery