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Wikipedia

The tensor veli palatini muscle (tensor palati or tensor muscle of the velum palatinum) is a broad, thin, ribbon-like muscle in the head that tenses the soft palate.

Tensor veli palatini muscle
Dissection of the muscles of the palate from behind (tensor veli palatini visible at upper right).
The otic ganglion and its branches (tensor veli palatini visible at center left).
Details
OriginMedial pterygoid plate of the sphenoid bone (scaphoid fossa)
InsertionPalatine aponeurosis
NerveMandibular nerve (V3)
ActionsTension of the soft palate
Identifiers
LatinMusculus tensor veli palatini
TA98A05.2.01.103
TA22129
FMA46730
Anatomical terms of muscle

Contents

The tensor veli palatini is found anterior-lateral to the levator veli palatini muscle.

It arises by a flat lamella from the scaphoid fossa at the base of the medial pterygoid plate, from the spina angularis of the sphenoid and from the lateral wall of the cartilage of the auditory tube.

Descending vertically between the medial pterygoid plate and the medial pterygoid muscle, it ends in a tendon which winds around the pterygoid hamulus, being retained in this situation by some of the fibers of origin of the medial pterygoid muscle.

Between the tendon and the hamulus is a small bursa.

The tendon then passes medially and is inserted into the palatine aponeurosis and into the surface behind the transverse ridge on the horizontal part of the palatine bone.

Nerve supply

The tensor veli palatini muscle is supplied by the mandibular nerve (CN V3). This is the third branch of the trigeminal nerve (CN V). It is the only muscle of the palate not innervated by the pharyngeal plexus, which is formed by the vagal and glossopharyngeal nerves.

The tensor veli palatini tenses the soft palate and by doing so, assists the levator veli palatini in elevating the palate to occlude and prevent entry of food into the nasopharynx during swallowing. The tensed palate consequently provides a stable platform for elevation of the pharynx during swallowing by the pharyngeal muscles. Since it is also attached to the lateral cartilaginous lamina of the auditory tube (also known as the Eustachian tube), it assists in its opening during swallowing or yawning to allow air pressure to equalize between the tympanic cavity and the outside air. Equalization of air pressure in the tympanic cavity is essential for preventing damage to the tympanic membrane and a resulting loss of hearing acuity.

  • Mandibular division of trigeminal nerve, seen from the middle line.

This article uses anatomical terminology.

This article incorporates text in the public domain from page 1139 of the 20th edition of Gray's Anatomy (1918)

  1. Fillmore, Erin P.; Seifert, Mark F. (2015). "22 - Anatomy of the Trigeminal Nerve". Nerves and Nerve Injuries. Vol. 1: History, Embryology, Anatomy, Imaging, and Diagnostics. Academic Press. pp. 319–350. doi:10.1016/B978-0-12-410390-0.00023-8. ISBN 978-0-12-410390-0.

Tensor veli palatini muscle Article Talk Language Watch Edit 160 160 Redirected from Tensor veli palatini The tensor veli palatini muscle tensor palati or tensor muscle of the velum palatinum is a broad thin ribbon like muscle in the head that tenses the soft palate Tensor veli palatini muscleDissection of the muscles of the palate from behind tensor veli palatini visible at upper right The otic ganglion and its branches tensor veli palatini visible at center left DetailsOriginMedial pterygoid plate of the sphenoid bone scaphoid fossa InsertionPalatine aponeurosisNerveMandibular nerve V3 ActionsTension of the soft palateIdentifiersLatinMusculus tensor veli palatiniTA98A05 2 01 103TA22129FMA46730Anatomical terms of muscle edit on Wikidata Contents 1 Structure 1 1 Nerve supply 2 Function 3 Additional images 4 See also 5 References 6 External linksStructure EditThe tensor veli palatini is found anterior lateral to the levator veli palatini muscle It arises by a flat lamella from the scaphoid fossa at the base of the medial pterygoid plate from the spina angularis of the sphenoid and from the lateral wall of the cartilage of the auditory tube Descending vertically between the medial pterygoid plate and the medial pterygoid muscle it ends in a tendon which winds around the pterygoid hamulus being retained in this situation by some of the fibers of origin of the medial pterygoid muscle Between the tendon and the hamulus is a small bursa The tendon then passes medially and is inserted into the palatine aponeurosis and into the surface behind the transverse ridge on the horizontal part of the palatine bone Nerve supply Edit The tensor veli palatini muscle is supplied by the mandibular nerve CN V3 1 This is the third branch of the trigeminal nerve CN V 1 It is the only muscle of the palate not innervated by the pharyngeal plexus which is formed by the vagal and glossopharyngeal nerves Function EditThe tensor veli palatini tenses the soft palate and by doing so assists the levator veli palatini in elevating the palate to occlude and prevent entry of food into the nasopharynx during swallowing The tensed palate consequently provides a stable platform for elevation of the pharynx during swallowing by the pharyngeal muscles Since it is also attached to the lateral cartilaginous lamina of the auditory tube also known as the Eustachian tube it assists in its opening during swallowing or yawning to allow air pressure to equalize between the tympanic cavity and the outside air Equalization of air pressure in the tympanic cavity is essential for preventing damage to the tympanic membrane and a resulting loss of hearing acuity Additional images Edit Mandibular division of trigeminal nerve seen from the middle line See also EditThis article uses anatomical terminology Levator veli palatiniReferences Edit This article incorporates text in the public domain from page 1139 of the 20th edition of Gray s Anatomy 1918 a b Fillmore Erin P Seifert Mark F 2015 22 Anatomy of the Trigeminal Nerve Nerves and Nerve Injuries Vol 1 History Embryology Anatomy Imaging and Diagnostics Academic Press pp 319 350 doi 10 1016 B978 0 12 410390 0 00023 8 ISBN 978 0 12 410390 0 External links EditPortal Anatomy Retrieved from https en wikipedia org w index php title Tensor veli palatini muscle amp oldid 1076465834, wikipedia, wiki, book,

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