Pharyngeal muscles

Pharyngeal muscles
Muscles of the pharynx and cheek
Muscles of the pharynx, viewed from behind, together with the associated vessels and nerves
Details
Nerve	receives motor innervation by Vagus nerve (CN X)
Identifiers
Latin	musculi pharyngis, musculus constrictor pharyngis or tunica muscularis pharyngis
TA	A04.2.06.001
FMA	46619 67169, 46619
*Anatomical terms of muscle* [edit on Wikidata]

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.

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).

Muscles of the neck

Cervical	Platysma Sternocleidomastoid Longus capitis Longus colli Scalene anterior middle posterior Rectus capitis anterior muscle Rectus capitis lateralis muscle

Suboccipital	Rectus capitis posterior major minor Obliquus capitis inferior superior

Suprahyoid	Mylohyoid Stylohyoid Digastric Geniohyoid

Infrahyoid	Thyrohyoid Sternohyoid Sternothyroid Omohyoid

Pharynx	Pharyngeal constrictor superior middle inferior Stylopharyngeus Salpingopharyngeus

Larynx	Cricothyroid Cricoarytenoid posterior lateral Arytenoid oblique arytenoid aryepiglottic transverse arytenoid Thyroarytenoid vocal thyroepiglottic

Trachea	Trachealis

Fasciae	Deep cervical fascia Pretracheal fascia Prevertebral fascia Investing layer Carotid sheath Alar fascia Palatine aponeurosis Buccopharyngeal fascia Pharyngobasilar fascia Pharyngeal raphe

Anatomy of the Gastrointestinal tract, excluding the mouth

Upper

Pharynx	Muscles Spaces peripharyngeal retropharyngeal parapharyngeal retrovisceral danger prevertebral Pterygomandibular raphe Pharyngeal raphe Buccopharyngeal fascia Pharyngobasilar fascia Piriform sinus

Esophagus	Sphincters upper lower glands

Stomach	Curvatures greater lesser Angular incisure Cardia Body Fundus Pylorus antrum canal sphincter Gastric mucosa Gastric folds Microanatomy Gastric pits Gastric glands Cardiac glands Fundic glands Pyloric glands Foveolar cell Parietal cell Gastric chief cell Enterochromaffin-like cell

Lower

Small intestine

Microanatomy	Intestinal villus Intestinal gland Enterocyte Enteroendocrine cell Goblet cell Paneth cell

Duodenum	Suspensory muscle Major duodenal papilla Minor duodenal papilla Duodenojejunal flexure Brunner's glands

Jejunum	no substructures

Ileum	Ileocecal valve Peyer's patches Microfold cell

Large

Cecum	Appendix

Colon	Ascending colon Hepatic flexure Transverse colon Splenic flexure Descending colon Sigmoid colon Continuous taenia coli haustra epiploic appendix

Rectum	Transverse folds Ampulla

Anal canal	Anus Anal columns Anal valves Anal sinuses Pectinate line Internal anal sphincter Intersphincteric groove External anal sphincter

Wall

This article is issued from Wikipedia - version of the 9/14/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.