Thyrocervical trunk
{{Short description|Artery of the neck}}
{{Use American English|date = January 2019}}
{{Use mdy dates|date = January 2019}}
{{Infobox artery
| Name = Thyrocervical trunk
| Latin = truncus thyrocervicalis
| Image = Thyrocervical trunk.png
| Caption = Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.
| Image2 =
| Caption2 =
| BranchFrom = Subclavian artery
| BranchTo = Inferior thyroid artery
Suprascapular artery
Transverse cervical artery
| Vein =
| Supplies =
}}
The thyrocervical trunks are very small arteries of the neck arising from the subclavian arteries, lateral to the vertebral arteries.{{cite book |last1=Saladin |first1=Kenneth S. |title=Human anatomy |date=2011 |publisher=McGraw-Hill |location=New York |isbn=9780071222075 |page=576 |edition=3rd}} They divide into branches: the inferior thyroid artery, suprascapular artery, and the transverse cervical artery.
The thyrocervical trunks supply the thyroid gland and some scapular muscles.
Structure
The thyrocervical trunk is a branch of the subclavian artery. It arises from the first portion of this vessel, between the origin of the subclavian artery and the inner border of the anterior scalene muscle. It is located distally to the vertebral artery and proximally to the costocervical trunk. It is short and wide artery.{{cite book |last1=Standring |first1=Susan |title=Gray's anatomy: the anatomical basis of clinical practice .Digital version |date=2016 |publisher=Elsevier |location=Philadelphia, Pa. |isbn=9780702052309 |page=590 |edition=41st}}
= Branches =
The thyrocervical trunk soon divides into branches: the inferior thyroid artery, the suprascapular artery, and the transverse cervical artery.
The transverse cervical artery is present in about 2/3 of cases. In a third of cases the superficial cervical artery and the dorsal scapular artery arise as the transverse cervical artery.{{cite book |last1=Standring |first1=Susan |title=Gray's anatomy: the anatomical basis of clinical practice. Digital version |date=2016 |publisher=Elsevier |location=Philadelphia, Pa. |isbn=9780702052309 |page=877 |edition=41st.}}
The suprascapular artery and transverse cervical artery both head laterally and cross in front of (anterior to) the anterior scalene muscle and the phrenic nerve. The inferior thyroid artery runs superiorly from the thyrocervical trunk to the inferior portion of the thyroid gland. There is significant variation in the origin of these vessels.{{Cite book |last1=Haas |first1=Franz |title=Flaps and Reconstructive Surgery - Section Two |last2=Weiglein |first2=Andreas |publisher=Saunders |year=2009 |isbn=978-0-7216-0519-7 |pages=249–269 |language=en |chapter=21 - Trapezius flap |doi=10.1016/B978-0-7216-0519-7.00021-6 |chapter-url=https://www.sciencedirect.com/science/article/pii/B9780721605197000216}}{{Verify source|date=July 2023}}
References
{{Reflist}}
External links
- {{SUNYAnatomyFigs|26|03|05}}
- {{LoyolaMedEd|grossanatomy/dissector/labs/ue/post_tri/pt3_2.html}}
{{Arteries of head and neck}}
{{Authority control}}