18 Questions
What covers the deep part of the submandibular gland?
Hyoglossus muscle
What type of secretion does parasympathetic stimulation produce in the submandibular gland?
Watery secretion
Which nerve is superior to the submandibular gland?
Lingual nerve
Which lymph nodes are involved in the lymphatic drainage of the submandibular gland?
Jugulodigastric lymph nodes
What is the blood supply to the submandibular gland mainly from?
Facial artery - submental artery
How are calculi of the submandibular gland duct typically managed?
Manually removed from within the mouth by incising the mucus membrane and duct over the stone
Which type of gland is the submandibular gland classified as?
Mixed gland (predominantly serous)
What is the weight range of the submandibular gland?
10-20 grams
Where does the superficial part of the submandibular gland extend up to anteriorly?
Anterior belly of the digastric muscle
What serves as the fascial covering or capsule for the submandibular gland?
Investing layer of deep cervical fascia
Which of the following is NOT a relation of the lateral surface of the submandibular gland?
Carotid sheath
Which part of the submandibular gland is described as having two ends, anterior and posterior?
Superficial part
Where is the submandibular ganglion located?
Outer surface of the hyoglossus muscle
Which nerve is the submandibular ganglion connected with?
Lingual nerve
What is the size of the submandibular ganglion?
Size of a pinhead
To which muscle is the submandibular gland suspended from?
Mylohyoid muscle
What is the functional relationship of the submandibular ganglion?
Related to the facial nerve
Which type of fibers does the lingual nerve carry to the submandibular gland?
Sensory fibers
Study Notes
Submandibular Gland Anatomy
- The deep part of the submandibular gland is covered by the stylohyoid muscle and the posterior belly of the digastric muscle.
- The submandibular gland is classified as a mixed gland, producing both serous and mucous secretions.
Innervation and Secretion
- Parasympathetic stimulation produces a serous secretion in the submandibular gland.
- The submandibular ganglion is connected to the lingual nerve and receives parasympathetic fibers from it.
- The functional relationship of the submandibular ganglion is to relay parasympathetic secretomotor fibers to the submandibular gland.
Location and Relations
- The submandibular gland is suspended from the stylohyoid muscle and the posterior belly of the digastric muscle.
- The superficial part of the submandibular gland extends up to the anterior border of the mandible.
- The submandibular gland is surrounded by a fascial covering or capsule, which is derived from the deep cervical fascia.
- The lateral surface of the submandibular gland is related to the submandibular fossa of the mandible, the medial pterygoid muscle, and the facial vein.
- The body of the submandibular gland is described as having two ends, an anterior and a posterior end.
Blood Supply and Lymphatic Drainage
- The blood supply to the submandibular gland is mainly from the facial artery and the lingual artery.
- The lymphatic drainage of the submandibular gland is to the submandibular lymph nodes.
Pathology and Management
- Calculi of the submandibular gland duct are typically managed by removing the stone or by excising the submandibular gland.
Size and Weight
- The weight of the submandibular gland ranges from 7 to 15 grams.
Neuroanatomy
- The submandibular ganglion is a small, oval-shaped ganglion located above the submandibular gland.
- The lingual nerve carries parasympathetic fibers to the submandibular gland.
Test your knowledge on the anatomy of the submandibular gland, including its relations, innervation, secretions, and blood supply. Explore the different structures surrounding the submandibular gland and their functions.
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