Quick Facts
Origin: First (left) or second (right) part of subclavian arteries.
Course: Arches backwards to the neck of first rib.
Branches: Supreme intercostal and deep cervical arteries.
Supplied Structures: Upper two intercostal spaces, vertebral column, deep cervical muscles.
Related parts of the anatomy
Origin
The costocervical trunk arises from the posterior surface of the first part of the subclavian artery on the left, or the second part of the subclavian artery on the right.
Course
The costocervical trunk arches posteriorly over the cervical pleura towards the neck of the first rib.
Branches
The costocervical trunk terminates by dividing into the supreme intercostal and deep cervical arteries.
Supplied Structures
The branches of the costocervical trunk supply arterial blood to structures of the first and second intercostal spaces, vertebral column, and cervical muscles of the back proper (deep muscles of the back).
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Costocervical Trunk
The right costocervical trunk originates from the right subclavian artery in the vicinity of the origin of the internal thoracic artery whereas the left costocervical trunk begins next to the origin of the superficial cervical artery on the left subclavian artery.
