Anatomy of Submental and Submandibular spaces Borders contents

1. Anatomy of Submental and
Submandibular triangles
DR. MANAHIL JAMIL

3. ANTERIOR
TRIANGLE
 BOUNDARIES
 Anterior border of the SCM muscle
 Midline of the neck
 Inferior border of the mandible
 ROOF
 Skin
 Superficial fascia and platysma muscle
 Investing layer of deep cervical fascia

4. Subdivisions of the Anterior Triangle
 The anterior triangle is divided into four smaller triangles
1. Submental triangle
2. Submandibular triangle
3. Carotid triangle
4. Muscular triangle

5. Submental
Triangle
 Borders
 Body of hyoid
 Anterior digastric on right
 Anterior digastric on left
 Floor
 Mylohyoid
 Roof
 Skin
 Superficial fascia with platysma
 Deep cervical fascia
 Content
 Anterior Jugular vein and sub-mental lymph
nodes

7. Submandibular Triangle
Borders
Inferior
border of the
mandible
Posterior
digastric
Anterior
digastric
Floor Hyoglossus Mylohyoid
Middle
constrictor
Roof Skin
Superficial
fascia with
platysma
Deep cervical
fascia

9. Contents of
Submandibular
Triangle
 Arteries
 Facial
 Sublingual
 Submental
 Veins: same as arteries
 Nerves
 Mylohyoid and hypoglossal
 Structures
 Submandibular gland
 Inferior portion of parotid gland
 Submandibular lymph node

10. Lesser’s Triangle
 It is a triangle contained within the Submandibular triangle
 Aids in identifying the lingual artery (especially for ligation)
 Boundaries of Lesser’s triangle
 Hypoglossal nerve
 Anterior digastric
 Posterior digastric

11. THANK YOU