Subclavian artery branches :
It is divided into 3 parts by Scaleneus ant . Muscle .
1st part : i) Vertebral artery
ii) Internal thoracic artery
iii) Thyrocervical trunk
{a- inferior thyroid artery
b- transverse cervical
c- suprascapular artery}
2nd part : Costocervical Trunk
superior intercostal artery 1st&2nd posterior intercostal artery.
3rd part : Dorsal Scapular artery
Mnemonic: V I T C D
( VITamin C D)