Mandibular notch
| Mandibular notch | |
|---|---|
| File:Mandibular notch - lateral view.png Position of mandibular notch in skull, shown in red. | |
| File:Mandibular notch - close-up - superior view2.png Position of mandibular notch in mandible, shown in red. | |
| Details | |
| Part of | mandible |
| System | skeletal |
| Identifiers | |
| Latin | incisura mandibulae |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of bone [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
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
[edit | edit source]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
[edit | edit source]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
[edit | edit source]The mandibular notch may be palpated to locate the parotid duct,[1] the facial artery,[1] the facial vein,[1] and the medial pterygoid muscle.[2]
Other animals
[edit | edit source]The mandibular notch can be found in other mammals, such as dogs and cats.[1] There can be significant variation in its shape even within the same species.[3] Archaeological evidence shows that the mandibular notch is different in other hominidae, such as neanderthals, and may be asymmetrical.[4]
Additional images
[edit | edit source]
References
[edit | edit source]Public domain This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
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External links
[edit | edit source]
- Anatomy image: skel/mandible2 at Human Anatomy Lecture (Biology 129), Pennsylvania State University
- Diagram at unc.edu
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