Vessel
Subclavian artery
Root artery of the upper limb
High-yield
Passes between the anterior and middle scalene muscles; becomes the axillary artery at the outer border of the first rib.
Overview
The artery supplying the upper limb and part of the neck and brain; it becomes the axillary artery at the lateral border of the first rib.
Reference facts
- Type
Muscular artery
- Origin
Right: brachiocephalic trunk. Left: aortic arch
- Branches / tributaries
Vertebral artery; Internal thoracic artery; Thyrocervical trunk; Costocervical trunk
- Supplies
Upper limb, neck, brain (vertebral), and anterior thoracic wall
- Course
Arches over the first rib between the scalene muscles and continues as the axillary artery at the rib's lateral border