Pretracheal fascia

Pretracheal fascia
Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli.
Details
Identifiers
LatinLamina praetrachealis fasciae cervicalis
TA98A04.2.05.004
TA22212
FMA46559
Anatomical terminology

The pretracheal fascia is a layer of the deep cervical fascia at the front of the neck. It attaches to the hyoid bone above, and - extending down into the thorax - blends with the fibrous pericardium below. It encloses the thyroid gland and parathyroid glands, trachea, and esophagus. It extends medially in front of the carotid vessels. It assists in forming the carotid sheath.

The back portion of the pretracheal fascia is known as the buccopharyngeal fascia.

Structure

The pretracheal fascia is continued behind the depressor muscles of the hyoid bone. After enveloping the thyroid gland, it is prolonged in front of the trachea to meet the corresponding layer of the opposite side. The pretracheal layer of the deep cervical fascia passes in front of the carotid sheath (i.e., common carotid artery, internal jugular vein, and vagus nerve) and in front of the cervical viscera (larynx, oesophagus, and pharynx). The muscular layer ensheathes the infrahyoid muscles.

Above, the pretracheal fascia is fixed to the hyoid bone. Below, it is carried downward in front of the trachea and large vessels at the root of the neck, and ultimately blends with the fibrous pericardium.

The pretracheal fascia is fused on either side with the prevertebral fascia, and with it completes the compartment containing the larynx and trachea, the thyroid gland, and the pharynx and esophagus.

Function

The pretracheal fascia encloses the thyroid gland, and is responsible for its movement during deglutition.

See also


This page was last updated at 2024-01-15 23:51 UTC. Update now. View original page.

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