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Mandibular notch

Groove in the ramus of the mandible

Field	Value
Name	Mandibular notch
Latin	incisura mandibulae
Image	Mandibular notch - lateral view.png
Caption	Position of mandibular notch in skull, shown in red.
Image2	Mandibular notch - close-up - superior view2.png
Caption2	Position of mandibular notch in mandible, shown in red.
PartOf	mandible	System=skeletal

The mandibular notch, also known as the sigmoid notch, is a groove in the ramus of the mandible. It is the gap between the coronoid process anteriorly and the condyloid process posteriorly.

Structure

The mandibular notch is a concave groove at the top of the ramus of the mandible. It is the gap between the coronoid process anteriorly and the condyloid process posteriorly.

Function

The mandibular notch allows for the passage of the masseteric nerve (a branch of the mandibular nerve (V3) division of the trigeminal nerve), the masseteric artery, and the masseteric vein.

Clinical significance

The mandibular notch may be palpated to locate the parotid duct, the facial artery, the facial vein, and the medial pterygoid muscle.

Other animals

The mandibular notch can be found in other mammals, such as dogs and cats. There can be significant variation in its shape even within the same species. Archaeological evidence shows that the mandibular notch is different in other hominidae, such as neanderthals, and may be asymmetrical.

Additional images

|File:Mandibular notch - close-up - superior view animation.gif|Position of mandibular notch in mandible, shown in red. |File:Gray176-Mandibular notch.png|Outer surface of mandible. Mandibular notch is labelled at top right.

References

Gelatt, Kirk N.. (2011). "Veterinary Ophthalmic Surgery". [[Saunders (imprint).
(2009). "Headache, Orofacial Pain and Bruxism". [[Churchill Livingstone]].
(2012-01-01). "Geometric Morphometrics for Biologists". [[Academic Press]].
(2017). "On Human Nature: Biology, Psychology, Ethics, Politics, and Religion". [[Academic Press]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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