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Costocervical Trunk
Cardiovascular System

Costocervical Trunk

Truncus costocervicalis

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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.

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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

ScienceDirect image

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.

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Complete Anatomy

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Complete Anatomy