Thyrocervical trunk

Thyrocervical trunk
Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.
Details
Source	subclavian
Branches	inferior thyroid suprascapular transverse cervical ascending cervical artery
Identifiers
Latin	Truncus thyreocervicalis
TA	A12.2.08.042
FMA	3990
*Anatomical terminology* [edit on Wikidata]

The thyrocervical trunk is a branch of the subclavian artery arising from the first portion of this vessel, i.e. between the origin of the subclavian artery and the inner border of the scalenus anterior muscle. It is located distally to the vertebral artery and proximally to the costocervical trunk.

Branches

It is a short and thick vessel and it divides soon after its origin into four branches:

inferior thyroid artery
suprascapular artery
ascending cervical artery
transversalis artery colli or transverse cervical artery

(Transverse cervical artery is present in about 1/3rd of cases. In rest dorsal scapular and superficial cervical arteries arise separately)(ref Essentials of human anatomy Head and neck A.K. Dutta 5th Edition p94)

The suprascapular artery and transverse cervical artery both head laterally and cross in front of (anterior to) the scalenus anterior muscle and the phrenic nerve. The inferior thyroid artery runs superiorly from the thyrocervical trunk to the inferior portion of the thyroid gland.

Additional images

The internal mammary artery and its branches.

External links

Anatomy figure: 26:03-05 at Human Anatomy Online, SUNY Downstate Medical Center
MedEd at Loyola grossanatomy/dissector/labs/ue/post_tri/pt3_2.html

Arteries of the head and neck

cervical branches (ascending palatine, tonsillar, submental, glandular)
facial branches (inferior labial
superior labial / nasal septum
lateral nasal
angular)

1st part / mandibular	anterior tympanic deep auricular middle meningeal (superior tympanic, petrosal) accessory meningeal inferior alveolar (mental, mylohyoid)

2nd part / pterygoid	to muscles of mastication (deep temporal, pterygoid, masseteric) buccal

3rd part / pterygopalatine	posterior superior alveolar infraorbital (anterior superior alveolar) descending palatine (greater palatine, lesser palatine) artery of the pterygoid canal sphenopalatine (posterior septal branches, posterior lateral nasal) pharyngeal

cervical	carotid sinus

petrous	Vidian caroticotympanic

cavernous/ ophthalmic	orbital group:anterior ethmoidal posterior ethmoidal lacrimal (lateral palpebral) medial palpebral terminal (supraorbital, supratrochlear, dorsal nasal) ocular group: central retinal ciliary (short posterior, long posterior, anterior) Circulus arteriosus major hypophysial (superior, inferior)

brain	Circle of Willis ACA (anterior communicating, medial striate, Orbitofrontal artery) MCA (anterolateral central, Prefrontal artery, Superior terminal branch, Inferior terminal branch, Anterior temporal branch) posterior communicating anterior choroidal

vertebral artery

meningeal
spinal (posterior, anterior)
basilar: pontine
labyrinthine
cerebellar (AICA, SCA, PICA)
cerebral (PCA)

thyrocervical trunk

inferior thyroid	inferior laryngeal tracheal esophageal ascending cervical pharyngeal glandular branches

transverse cervical	superficial branch deep branch / dorsal scapular scapular anastomosis

suprascapular	acromial branch scapular anastomosis

costocervical trunk

This article is issued from Wikipedia - version of the 4/27/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.