salivary glands Flashcards
How many pairs of salivary glands are there and what are they?
3
parotid
submandibular
sublingual
What type of saliva does the parotid salivary gland produce?
Serous saliva
Which is the largest salivary gland?
Parotid
is the parotid salivary gland encapsulated?
yes- 2 lobes
What is the location of the parotid salivary gland?
Extends from the zygomatic arch to the angle of the mandible anterior to the ear.
What does the parotid salivary gland sit between?
The skin and the masseter muscle
What is the location of the superficial lobe of the parotid salivary gland?
subcutaneous, anterior to the external ear, between skin and masseter muscle
What is the location of the deep lobe of the parotid gland?
Inferior to the external ear, posterior to ramus of the mandible
How much of the total salivary volume is produced by the parotid salivary gland?
25%
How long is the stenson’s duct?
about 5cm
What is another name for the Stenson’s duct?
The parotid duct.
Where is the Stenson’s duct located?
superficial to the masseter muscle, pierces the buccinator.
Where does the Stenson’s duct open?
On the buccal mucosa usually opposite the maxillary second molar.
What does the parotid papilla mark?
The opening of the Stenson’s duct
What is the duct of the parotid salivary gland?
The Stenson’s duct
What important anatomical structures does the parotid salivary gland enclose? (4)
- External Carotid Artery
- Retromandibular vein
- Facial nerve
- Auriculotemporal nerve
What is the arterial supply to the parotid salivary gland?
ECA
What is the venous drainage of the parotid salivary gland?
Retromandibular vein
What is the secretomotor (sympathetic and parasympathetic) supply of the parotid salivary gland?
sympathetic- Superficial cervical ganglion
parasympathetic- Glossopharyngeal nerve
What is the sensory innervation of the parotid salivary gland?
Auriculotemporal nerve
What is the lymphatic drainage of the parotid salivary gland?
Deep parotid lymph nodes
What are the two modes of extra-oral examination of the parotid salivary gland?
- Visual examination
- Palpation (bilateral)
What about the parotid salivary gland is examined intra-orally?
- The parotid papilla
Why do we need to examine the parotid salivary gland? (5)
- infection
- blockage
- lesion
- autoimmune diseases
- to make accurate clinical decisions
What type of gland are salivary glands?
Exocrine glands (have duct)
What type of saliva does the submandibular salivary gland produce?
Mixed saliva (serous/mucous)
is the submandibular salivary gland encapsulated?
Yes- 2 lobes
How much of the total salivary volume is produced by the submandibular salivary gland?
65%
What is the anatomical location of the submandibular salivary gland?
posterior part of the floor of the mouth near the angle of the mandible- occupies the submandibular fossa
Where does the superficial lobe of the submandibular salivary gland lie?
superficial to the mylohyoid muscle
Where does the deep lobe of the submandibular salivary gland lie?
Wraps around the posterior border of the mylohyoid muscle
What salivary does the Wharton’s duct drain?
The submandibular salivary gland
Which lobe does the Wharton’s duct arise from?
The deep lobe
Where does the Wharton’s duct run?
forward above the mylohyoid muscle to reach the anterior floor of the mouth
What is the orifice of the submandibular gland?
The sublingual caruncle
Where is the sublingual caruncle located?
Beside the base of the lingual frenum
What nerve loops under the Wharton’s duct?
The lingual nerve
What is the arterial supply to the submandibular salivary gland?
The facial artery
What is the venous drainage of the submandibular salivary gland?
The facial vein
What is the secretomotor nerve supply of the submandibular salivary gland? (paraasympathetic and sympathetic)
parasympathetic- facial N
sympathetic- superficial cervical ganglion
What is the sensory nerve supply of the submandibular salivary gland?
The lingual nerve
What is the lymphatic drainage of the submandibular salivary gland?
The submandibular lymph nodes
How is the submandibular salivary gland examined extraorally?
Bilateral palpation inferior and posterior to the body of the mandible when the patient lowers the head
What is a condition associated with the submandibular and sublingual salivary glands?
Mealtime syndrome
What type of saliva does the sublingual salivary gland produce?
mucous saliva
Is the sublingual salivary gland encapsulated?
no- one lobe
How much of the total salivary volume is produced by the sublingual salivary gland?
5-10%
What is the anatomical location of the sublingual salivary gland?
Anterior part of the floor of the mouth between the mucous membrane and mylohyoid muscle
- occupies sublingual fossa
- superior to the mylohyoid muscle
- medial to the body of the mandible
What salivary gland is drained by the Bartholin’s duct?
The sublingual salivary gland
Where does the Bartholin’s duct open?
The sublingual caruncle
What are the Rivinus ducts?
A row of smaller ducts (8-20) opening into the mouth along the sublingual fold- under the tongue
What is the arterial supply of the sublingual salivary gland?
The sublingual artery
What is the venous return of the sublingual salivary gland?
The sublingual vein
What is the secretomotor nerve supply of the sublingual salivary gland? (parasympathetic and sympathetic)
parasympathetic- facial N
sympathetic- superficial cervical ganglion
What is the sensory nerve supply of the sublingual salivary gland?
The lingual N
What is the lymphatic drainage of the sublingual salivary gland?
Submandibular lymph nodes
How is the sublingual salivary gland clinically examined?
Palpate on the floor of the mouth posterior to each mandibular canine- two fingers each intra and extra orally