Salivary Glands: Function, Location & Anatomy

Salivary Glands: Function, Location & Anatomy

Describe Submandibular Gland under following headings:

1. Submandibular Gland Situation
2. Submandibular Gland Surfaces and relations
3. Submandibular Gland Nerve supply
4. Submandibular Gland Applied anatomy

Answer:

Submandibular gland:

• It is large salivary gland

Submandibular Gland Situation:

• Present in anterior part of digastric triangle

Submandibular Gland Surfaces and relations:

• Submandibular gland is divided into two parts:

1. Superficial part

2. Deep part

Submandibular Gland Nerve supply:

• It is supplied by branches from the submandibular ganglion
• It carries

1. Secretomotor fibres

• Superior salivatory nucleus → nervus intermedius→ Facial nerve Chorda tympani nerve lingual nerve→ Submandibular ganglion
  and sublingual glands

2. Sensory fibres

• It arises from the lingual nerve

3. Vasomotor sympathetic fibres

• Arises from plexus on the facial artery

Submandibular Gland Applied anatomy:

• Relay Post ganglionic fibres from it reaches submandibular
• Submandibular lymph nodes lie both within and outside the submandibular gland
• Secretion of submandibular gland is more viscous this more prone for calculi
• Excision of submandibular gland for tumour or calculus is done by incision below angle of jaw to preserve marginal mandibular branch of facial nerve
• Submandibular gland is palpated by putting one finger within the mouth and one finger outside