Subclavius
Chest & Trunk
A small shock absorber under the clavicle — it's so consistently located that surgeons use the subclavian vein running nearby for central IV access.
Function
Anchors and depresses clavicle
Origin
Junction of first rib and costal cartilage
Insertion
Inferior middle third of clavicle
Innervation
Nerve to subclavius (C5-C6)