As it descends it diminishes in thickness, and is gradually lost.
It is strengthened posteriorly by a strong fibrous band, which is attached above to the pharyngeal spine on the under surface of the basilar portion of the occipital bone, and passes downward, forming a median raphé, which gives attachment to the Constrictores pharyngis.
- "Pharyngobasilar fascia". Medcyclopaedia. GE. Archived from the original on 2012-02-05.