It attaches to the hyoid bone above, and - extending down into the thorax - blends with the fibrous pericardium below.

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).

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.

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