Submandibular Gland: Anatomy, Histology, Blood Supply & Nerve Supply
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Submandibular Salivary Gland Anatomy:
- It is a large salivary gland situated in the anterior part of the digastric triangle
- It is roughly J-shaped structure being indented by the posterior border of the Mylohyoid
- This divides it into large superficial part & small deep part
1. Submandibular Salivary Gland Superficial part:
- It fills the digastric triangle
- It has 3 surfaces
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2. Submandibular Salivary Gland Deep part:
- It is related
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Submandibular Salivary Gland Histology:
- Submandibular gland contains serous end peices & mucous tubules
- Serous end peices contains abundant secretory granules, spherical nucleus & basophilic cytoplasm Mucous secretory cells are filled with pale staining secretory material & little cytoplasm
- Its nucleus is compressed & contains densely stained chromatin
- The lumina of mucous tubules are larger
- The Intercalated & Striated ducts are less in number
Submandibular Salivary Gland Blood supply:
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Submandibular Salivary Gland Nerve supply:
- It is supplied by branches from the submandibular ganglion
- It carries
1. Secretomotor fibres:
- Its course is as follows:
- Superior salivatory nucleus → Nervus intermedius → Facial nerve → Chorda tympani nerve →→ Lingual nerve → Submandibular ganglion → Relay Post ganglionic fibres from it reaches Submandibular & Sublingual gland
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2. Sensory fibres:
- It arises from the lingual nerve
3. Vasomotor sympathetic fibres:
- Arises from the plexus on the facial artery
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