This is a description on submandibular salivary gland. It is a large gland in tha floor of the mouth. It is clinically important and commonest site for stone formation. Imfection can produce pain. Submandibular duct opens on either side of frenulum

1. Submandibular salivary gland
A.M.Silmy Ahamed

2. Submandibular gland
• Mucous and serous secreations
• 2 parts
• Large superficial part
• Small deep part
• Both are continuous along the posterior border of omohyoid

3. Superficial part
• 3 surfaces
• Medial
• Lateral
• Inferior

4. Lateral surface
• Lie against mandibular fossa
• Overlapped infront by medial pterygoid
• Grooved posteriorly by facial artery

5. Superficial or inferior surface
• Skin, platysma and investing layer of
deep cervical fascia
• Crossed by,
1. Facial vein
2. Cervical branch of facial nerve
3. Sometimes by marginal mandibular
branch of facial nerve
• Lymph nodes are inside the substance
of the gland

6. Medial surface
• Against myolohyoid, behind it by hypoglossus, lingual nerve,
hypoglossal nerve and accompanying veins
• Facial artery groove the
posterosuperior part of the
medial surface

7. Deep part
• Extends for Variable distance
• Between mylohyoid and hyoglossus

8. Submandibular duct ( of Wharton )
• 5 cm long
• From medial surface of superficial part
• Near posterior border of mylohyoid
• Run with deep part forward and upward
• 1st between mylohyoid and hyoglossus.
• As it lies on hyoglossus it is crossed by lingual
nerve
• Opens on either side of the frenulum

9. • Blood supply
• Facial artery
• Facial vein
• Lymphatic drainage
• Submandibular lymph node
• Nerve supply
• Secretomotor – submandibular ganglion which also supplies sublingual gland
• Sympathetic – plexus around facial artery

10. Clinical
• Incision should be put 4 cm below the mandible to prevent damage
to marginal mandibular branch of facial nerve
• Stone(sialoliths) is common in submandibular gland
1. Serous content
2. Drain against gravity
3. Lingual nerve cross and kinks the duct.

11. Regarding submandibular gland
1. Lingual nerve supply the submandibular gland
2. It is the common gland to get stones
3. Bimanual palpation is used to identify stones
4. Marginal mandibular branch of facial nerve is at risk when doing
surgeries
5. Facial artery groove the lateral surface

12. Will continue……