ANTERIOR TRIANGLE OF NECK
| A | Diagastric | |
| B |
Subclavian |
|
| C |
Muscular |
|
| D |
Submental |
All of the following are in the anterior triangle of neck EXCEPT:
| A |
Diagastric |
|
| B |
Subclavian |
|
| C |
Muscular |
|
| D |
Submental |
- Posterior triangle of the neck has 2 parts: Occipital & subclavian
- The subclavian triangle is also called as supraclavicular or omoclavicular triangle.
- Anterior triangles of neck are-Submental, Digastric, Carotid, Muscular.
Structure superficial to mylohyoid in anterior digastric triangle are:
| A |
Deep part of submandibular gland |
|
| B |
Hypoglossal nerve |
|
| C |
Part of parotid gland |
|
| D |
Mylohyoid artery & nerve |
- Deep part of submandibular gland & hypoglossal neve are deep to mylohyoid muscle.
- Structures passing superficial to mylohyoid in anterior part of digastric triangle are submandibular gland (superficial part), facial vein, facial artery, mylohyoid nerve & vessels, hypoglossal nerve & submandibular nodes.
All is true about digastric triangle EXCEPT:
| A |
On either side is anterior belly of digastric muscle |
|
| B |
Floor is formed by mylohyoid muscle |
|
| C |
Floor is formed by hyoglossus muscle |
|
| D |
Contains mylohyoid nerve & vessels |
Boundaries:
- Digastric triangle is bounded by anterior belly of digastric anteriorly & posterior belly posteriorly.
- Mylohyoid & hyoglossus muscles are the floor.
Contents:
Digastric triangle contains mylohyoid nerve & vessels, submandibular gland, facial artery & vein, hypoglossal nerve & submandibular lymph nodes.
On both sides submental triangle is bounded by:
| A |
Hyoid bone |
|
| B |
Anterior digastric |
|
| C |
Posterior digastric |
|
| D |
Mylohyoid |
- The submental triangle is unpaired and bounded by the anterior bellies of both digastric muscles and the body of the hyoid bone
- Mylohyoid muscle is at the floor
- Submental lymph nodes and small submental veins are the contents of the submental triangle.
