Mandible Flashcards

Explore the mandible's body, rami, processes, foramina, muscle attachments, neurovascular passages, articulations, and clinical anatomy.

Card 1 of 30Question

What is the mandible?

The largest and strongest facial bone, forming the lower jaw and supporting the mandibular teeth.

In This Section

1. What is the mandible?

The largest and strongest facial bone, forming the lower jaw and supporting the mandibular teeth.

2. What are the two principal anatomical components of the mandible?

A horizontal body and two ascending rami.

3. What is the mandibular symphysis?

The midline fusion site of the two embryonic halves of the mandible.

4. What is the mental protuberance?

A triangular bony prominence on the anterior midline of the mandibular body that forms the chin.

5. What is the alveolar part of the mandible?

The superior tooth-bearing portion of the mandibular body containing sockets for the lower teeth.

6. Where is the mental foramen typically located?

On the external surface of the mandibular body, usually below the second premolar tooth.

7. Which structures pass through the mental foramen?

The mental nerve, artery, and vein.

8. What is the mylohyoid line?

An oblique ridge on the medial surface of the mandibular body providing attachment for the mylohyoid muscle.

9. Which salivary gland occupies the sublingual fossa of the mandible?

The sublingual gland.

10. Where is the submandibular fossa located?

On the medial surface of the mandibular body, inferior to the posterior portion of the mylohyoid line.

11. What are the mental spines, also called genial tubercles?

Small bony projections near the mandibular midline providing attachment for the genioglossus and geniohyoid muscles.

12. What is the mandibular angle?

The junction between the inferior border of the mandibular body and the posterior border of the ramus.

13. What are the two superior processes of each mandibular ramus?

The anterior coronoid process and posterior condylar process.

14. Which muscle inserts onto the coronoid process of the mandible?

The temporalis muscle.

15. What is the mandibular notch?

A concavity between the coronoid and condylar processes of the mandibular ramus.

16. Which structures cross the mandibular notch?

The masseteric nerve and vessels.

17. Which part of the mandible articulates with the temporal bone?

The mandibular head of the condylar process, forming the temporomandibular joint.

18. Which muscle attaches to the pterygoid fovea on the mandibular neck?

The lateral pterygoid muscle, primarily its inferior head.

19. Where is the mandibular foramen located?

On the medial surface of the mandibular ramus.

20. Which structures enter the mandibular foramen?

The inferior alveolar nerve, artery, and vein.

21. What is the lingula of the mandible?

A tongue-shaped bony projection immediately anterior to the mandibular foramen.

22. Which ligament attaches to the lingula of the mandible?

The sphenomandibular ligament.

23. What is the mandibular canal?

An intraosseous passage extending from the mandibular foramen through the mandibular body, carrying inferior alveolar neurovascular structures.

24. Which muscle attaches to the lateral surface of the mandibular ramus and angle?

The masseter muscle.

25. Which muscle attaches to the medial surface of the mandibular angle?

The medial pterygoid muscle.

26. Which muscle originates from the digastric fossa of the mandible?

The anterior belly of the digastric muscle.

27. How does the mandible primarily develop embryologically?

Through intramembranous ossification of first pharyngeal arch mesenchyme adjacent to Meckel's cartilage.

28. Why is the mandibular foramen an important landmark for dental anesthesia?

The inferior alveolar nerve can be anesthetized near its entry into the mandibular canal.

29. What is the typical displacement of mandibular condylar fragments following a condylar neck fracture?

The proximal condylar fragment may be displaced anteromedially by the lateral pterygoid muscle.

30. Which nerve is vulnerable during surgery near the medial surface of the mandibular third molar region?

The lingual nerve, which may lie close to the lingual cortical plate.