Middle layer of the deep cervical fascia
Citation, DOI & article data
The middle layer of the deep cervical fascia is the one of the three layers of the deep cervical fascia that most closely surrounds the visceral organs. This layer consists anteriorly of the strap muscle fascia (comprised of the sterno-omohyoid and sternothyroid-thyrohyoid layers) and posteriorly of the visceral fascia (also commonly known as the pharyngobasilar and buccopharyngeal fascia, particularly in the suprahyoid neck, or, less commonly, pharyngomucosal fascia) 1,2. The alternative term pretracheal fascia may refer to either the visceral fascia or the sternothyroid-thyrohyoid layer of strap muscle fascia, which lies anterior to the trachea 1,2.
- infrahyoid (strap) muscles
- visceral space and pharyngeal mucosal space
*Some sources consider these structures to have their own fascia not derived from the middle layer of the deep cervical fascia, but they are nevertheless considered part of the visceral space 2.
In addition, all layers of the deep cervical fascia contribute to the carotid sheath. However, in the suprahyoid neck, above the carotid bifurcation, the contribution of the middle layer is inconsistent 3.
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- 2. Peter M. Som, Hugh D. Curtin. Head and Neck Imaging - 2 Volume Set. (2011) ISBN: 9780323053556
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