Pharyngeal muscles

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Pharyngeal muscles
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Muscles of the pharynx and cheek
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Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves
Details
receives motor innervation by Vagus nerve (CN X)
Identifiers
Gray's p.1143
TA A04.2.06.001
FMA FMA:67169
Anatomical terms of muscle

The pharyngeal muscles are a group of muscles that act upon the pharynx. 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.

They are innervated by the pharyngeal branch of the Vagus nerve (CN X) with the exception of the stylopharyngeus muscle which is innervated by the glossopharyngeal nerve (CN IX).