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Masseter — Anatomy Notes, Diagram & Quiz
The Masseter is located in the lateral mandible. Powerful elevator of the mandible for chewing. The Masseter elevates the mandible, closing the jaw during mastication.
Key facts
| Location | Lateral mandible |
|---|---|
| Main function | Powerful elevator of the mandible for chewing. |
| Layer | deep muscles |
| Key fact 1 | The Masseter elevates the mandible, closing the jaw during mastication. |
| Key fact 2 | The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus. |
| Key fact 3 | Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin. |
Where is the Masseter located?
The Masseter is located in the lateral mandible.
The Masseter elevates the mandible, closing the jaw during mastication.
What does the Masseter do?
Powerful elevator of the mandible for chewing.
The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus.
What to know for exams
- The Masseter elevates the mandible, closing the jaw during mastication.
- The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus.
- Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin.
It belongs to the deep muscles layer. Learn its location, relations, and the structures it works with.
Clinical relevance
Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin.
Link the masseter to its blood supply, innervation and relations. That is how exam questions usually test it.
Memory aid: Masseter
The Masseter elevates the mandible, closing the jaw during mastication. The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus. Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin.
Chain it as location → function → clinical link when you revise.
Masseter anatomy quiz
Five questions. Open each answer after you commit to a response.
-
Where is the Masseter located?
Reveal answer
Lateral mandible
-
What is the main function of the Masseter?
Reveal answer
Powerful elevator of the mandible for chewing.
-
Give one key fact about the Masseter.
Reveal answer
The Masseter elevates the mandible, closing the jaw during mastication.
-
Give another key fact about the Masseter.
Reveal answer
The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus.
-
What clinical link is associated with the Masseter?
Reveal answer
Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin.
Common questions
Where is the Masseter located?
The Masseter is located in the lateral mandible. The Masseter elevates the mandible, closing the jaw during mastication.
What does the Masseter do?
Powerful elevator of the mandible for chewing. The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus.
What is a key fact about the Masseter?
Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin.
What layer does the Masseter belong to?
It belongs to the deep muscles layer of the body.
What should I remember for exams?
The Masseter elevates the mandible, closing the jaw during mastication. The Masseter originates from the zygomatic arch and inserts on the lateral surface of the mandibular ramus. Masseter hypertrophy is seen in habitual teeth grinders and can be treated with botulinum toxin.
Sources
- Standring, S. (ed.). Gray’s Anatomy, 42nd edition. Elsevier, 2020.
- TeachMeAnatomy — anatomy library
- Kenhub — anatomy library
- StatPearls / NCBI Bookshelf — Masseter search
3D atlas and image credits
Anatomy models: BodyParts3D, © Database Center for Life Science (DBCLS), CC BY-SA 2.1 Japan. Écorché by Charleeh, derived from BodyParts3D and Z-Anatomy, CC BY-SA 4.0. Rendered in anotemy. Changes: highlighting, framing, labels and background removal. Images: CC BY-SA 4.0.
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