Podcast
Questions and Answers
Which of the following conditions is NOT mentioned as a potential cause of dry mouth?
Which of the following conditions is NOT mentioned as a potential cause of dry mouth?
Which type of neoplasm is categorized as benign?
Which type of neoplasm is categorized as benign?
What is a common emotional disturbance that can lead to dry mouth?
What is a common emotional disturbance that can lead to dry mouth?
Which medication type is noted to potentially cause dry mouth?
Which medication type is noted to potentially cause dry mouth?
Signup and view all the answers
Which of the following is a malignant neoplasm?
Which of the following is a malignant neoplasm?
Signup and view all the answers
What percentage of total saliva volume does the submandibular gland produce?
What percentage of total saliva volume does the submandibular gland produce?
Signup and view all the answers
Which duct is associated with the submandibular gland?
Which duct is associated with the submandibular gland?
Signup and view all the answers
Where is the sublingual gland located?
Where is the sublingual gland located?
Signup and view all the answers
What is the main type of saliva produced by the sublingual gland?
What is the main type of saliva produced by the sublingual gland?
Signup and view all the answers
Which nerve innervates both the submandibular and sublingual glands?
Which nerve innervates both the submandibular and sublingual glands?
Signup and view all the answers
What type of gland are the Tubarial glands considered?
What type of gland are the Tubarial glands considered?
Signup and view all the answers
Which option best describes the predominant type of secretion in minor salivary glands?
Which option best describes the predominant type of secretion in minor salivary glands?
Signup and view all the answers
What is the approximate size of the submandibular gland?
What is the approximate size of the submandibular gland?
Signup and view all the answers
Which of the following glands primarily produces less than 10% of mixed saliva?
Which of the following glands primarily produces less than 10% of mixed saliva?
Signup and view all the answers
What is the primary duct associated with the submandibular gland?
What is the primary duct associated with the submandibular gland?
Signup and view all the answers
Which statement regarding sublingual gland secretion is correct?
Which statement regarding sublingual gland secretion is correct?
Signup and view all the answers
What nerve is primarily responsible for the innervation of the submandibular gland?
What nerve is primarily responsible for the innervation of the submandibular gland?
Signup and view all the answers
Identify the location of the submandibular gland.
Identify the location of the submandibular gland.
Signup and view all the answers
Which of the following structures is not a minor salivary gland?
Which of the following structures is not a minor salivary gland?
Signup and view all the answers
What type of saliva do the submandibular glands primarily produce?
What type of saliva do the submandibular glands primarily produce?
Signup and view all the answers
Which branch of the inferior dental nerve is associated with the submandibular gland?
Which branch of the inferior dental nerve is associated with the submandibular gland?
Signup and view all the answers
What is the primary function of serous saliva?
What is the primary function of serous saliva?
Signup and view all the answers
What distinguishes mucous acini from serous acini?
What distinguishes mucous acini from serous acini?
Signup and view all the answers
What role do myoepithelial cells play in salivary glands?
What role do myoepithelial cells play in salivary glands?
Signup and view all the answers
What is the composition of acinar fluid?
What is the composition of acinar fluid?
Signup and view all the answers
Which structure surrounds the entirety of the outer portion of a gland?
Which structure surrounds the entirety of the outer portion of a gland?
Signup and view all the answers
How are serous-mucous acini structured?
How are serous-mucous acini structured?
Signup and view all the answers
Which type of duct is primarily lined by cuboidal epithelial cells?
Which type of duct is primarily lined by cuboidal epithelial cells?
Signup and view all the answers
What does the septum within a gland do?
What does the septum within a gland do?
Signup and view all the answers
Which condition is characterized by dry eyes and destroyed acini in the oral cavity?
Which condition is characterized by dry eyes and destroyed acini in the oral cavity?
Signup and view all the answers
What is a common symptom of Sjögren’s syndrome in the oral cavity?
What is a common symptom of Sjögren’s syndrome in the oral cavity?
Signup and view all the answers
Which of the following conditions is associated with painful swelling of the parotid glands?
Which of the following conditions is associated with painful swelling of the parotid glands?
Signup and view all the answers
Xerostomia can occur as a side effect of which of the following treatments?
Xerostomia can occur as a side effect of which of the following treatments?
Signup and view all the answers
Nicotine Stomatitis results from inflammation of which type of glands?
Nicotine Stomatitis results from inflammation of which type of glands?
Signup and view all the answers
Which factor is not commonly associated with Sjögren’s syndrome?
Which factor is not commonly associated with Sjögren’s syndrome?
Signup and view all the answers
What does sialosis refer to?
What does sialosis refer to?
Signup and view all the answers
After head and neck irradiation, which condition may improve after treatment ends?
After head and neck irradiation, which condition may improve after treatment ends?
Signup and view all the answers
Study Notes
Submandibular Gland
- Largest salivary gland
- Located between the mandible and mylohyoid muscle in the submandibular fossa
- Secretes 60-65% of total saliva volume
- Secretes mixed saliva (serous and mucous)
- Has a duct called Wharton’s duct which is 5cm long and opens under the tongue
- Innervated by the chorda tympani and the lingual branch of the inferior dental nerve
Sublingual Gland
- Smallest of the major salivary glands
- Located on the floor of the mouth in the sublingual fossa
- Secretes 5-10% of total saliva volume
- Secretes primarily mucous saliva (60%)
- Has a main duct called Bartholin’s duct and numerous smaller ducts called Rivinus ducts
- Innervated by the same nerves as the submandibular gland: chorda tympani and lingual branch of the inferior dental nerve
Minor Salivary Glands
- Located throughout the mouth
- Contribute >10% of total saliva volume
- Produce mixed saliva (primarily mucous)
- Responsible for lubricating food and protecting the oral cavity against friction
Salivary Gland Structure
- Made up of epithelial tissue and connective tissue
- Connective tissue surrounds the epithelium and acts as support, also carrying the nerve and blood supply to the gland
- Gland is divided into lobes and lobules by septa
Adenomeres
- Secretory units of the salivary glands
- Surrounded by connective tissue
- Contain acini which are the secretory cells
Acini
- Classified as mucous, serous, or a mix of both
- Serous acini secrete watery, serous saliva, which helps lubricate food, begin digestion, remove debris and dilute food
- Mucous acini secrete viscous, mucin-rich mucous saliva, which binds food into a bolus, protects the oral cavity against friction, and lubricates
- Serous-mucous acini have serous secretory cells forming a serous demilune around the mucous cells
Myoepithelial Cells
- Surround acini
- Contract to squeeze saliva out of the lumen and into the ducts
Acinar Fluid
- Not yet fully-formed saliva
- Contains water, inorganic ions, small molecules, and products synthesised by cells like mucoproteins and amylase
Ducts
- Classified as intercalated, striated, or excretory
- Intercalated ducts are lined by cuboidal epithelial cells and are the shortest type of duct
- Striated ducts are the longest type of duct and are lined by columnar epithelial cells
- Excretory ducts are the main ducts that carry saliva out of the gland
Salivary Gland Disorders
- Irradiation: can lead to atrophy of the gland and xerostomia
- Sjögren’s syndrome: autoimmune disorder that destroys acini causing dry mouth (xerostomia) and dry eyes (xerophthalmia), can also be associated with other diseases like rheumatoid arthritis and Raynaud phenomenon
- Mumps: acute viral infection with swelling of the parotid glands
- Nicotine Stomatitis: inflammation of the minor salivary glands on the palate caused by heat from tobacco use
- Sialosis: painless swelling of the parotid glands, can be caused by other medical conditions
- Neoplasms: can be benign (e.g. Warthin’s tumour) or malignant (e.g. salivary gland carcinoma)
- Functional disorders: Can occur due to emotional disturbances, mouth breathing, smoking, and medications
### Tubarial Glands
- Newly discovered glands
- Located in the nasopharynx
- Secretes seromucous saliva and contributes to lubrication and swallowing
Summary
- Salivary glands are important for oral health
- Extra-oral examinations should include examination of the salivary glands to identify potential issues
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz explores the submandibular, sublingual, and minor salivary glands. Learn about their locations, secretions, innervations, and functions in the oral cavity. Test your knowledge on the anatomy and physiology of these essential glands.
