Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves
|Nerve||receives motor innervation by Vagus nerve (CN X)|
|Latin||musculi pharyngis, musculus constrictor pharyngis or tunica muscularis pharyngis|
|FMA||46619 67169, 46619|
The pharyngeal muscles are a group of muscles that form the pharynx, determining the shape of its lumen. The pharyngeal muscles contracts pushing the food into the oesophagus. There are two muscular layers of the pharynx: the outer circular layer and the inner longitudinal layer. The outer circular layer includes:
During swallowing, these muscles constrict to propel bolus downwards (an involuntary process).
The inner longitudinal layer includes:
During swallowing, these muscles act to shorten and widen the pharynx.