MCQs in Oral Histology

Chapter 12: Salivary gland

 

1- Mucous cells of salivary glands have:

  1. Rounded nuclei.
  2. Flattened nuclei.
  3. Form the cap of the demilunes.
  4. Have zymogen granules.

 

 

 

 

 

 

 

The answer is: B

 

2- Which of the following is not function of the striated duct?

  1. Iodine secretion.
  2. Zymogen secretion.
  3. Sodium & chloride transport.
  4. Potassium & calcium transport.

 

 

 

 

 

 

 

The answer is: B

 

3Which of the following is not characteristic of serous cells of a salivary gland?

  1. The cells are pyramidal in shape.
  2. Its secretory granules are called zymogen granules.
  3. They are capped by mucous cells in a mixed salivary acinus.
  4. There is junctional complexes between the secretory cells.

 

 

 

 

 

 

 

 

The answer is: C

 

4- Which of the following adult gland is incorrectly paired with its secretion?

  1. Parotid - pure serous.
  2. Palatal salivary glands - pure mucous.
  3. Submandibular - mixed salivary gland.
  4. Sublingual - pure serous.

 

 

 

 

 

 

 

 

The answer is: D

 

5- The secretory canaliculi in salivary gland is found in:

  1. Mucous acini.
  2. Striated ducts.
  3. Serous acini.
  4. Main duct.

 

 

 

 

 

 

 

The answer is: C

 

6- The excretory ducts of the major salivary glands are lined with:

  1. Simple cubiodal epithelium with goblet cells.
  2. Simple columnar without goblet cells.
  3. Stratified squamous epithelium with goblet cells.
  4. Pseudostratified columnar epithelium with goblet cells.

 

 

 

 

 

 

 

 

The answer is: D

 

7- The cytoplasmic basophilia observed in acinar cells of the adult parotid gland is due to:

  1. Mucigen granules
  2. Ribosomes
  3. Glycoproteins
  4. Lysosomes

 

 

 

 

 

 

 

 

The answer is: B

 

8- Pure mucous salivary gland is:

  1. Parotid gland.
  2. Major sublingual glands.
  3. Glossipalatine gland
  4. Submandibular gland.

 

 

 

 

 

 

The answer is: C

 

9- The basophilia observed in acinar cells of the parotid gland is due to:

  1. Mucigen granules.
  2. Lysosomes
  3. Glycoproteins
  4. Ribosomes

 

 

 

 

 

 

 

The answer is: D

 

10- In the demilune of the mixed salivary acinus, the mucous secretory cells:

  1. Have rounded nuclei.
  2. Form demilune cappings.
  3. Have zymogen granules.
  4. Line the luminal surface of the acinus.

 

 

 

 

 

 

 

The answer is: D

 

11- The concentration of sodium and chloride in saliva is controlled by:

  1. Highly differentiated serous cells.
  2. Well developed mucous cells.
  3. Striated ducts.
  4. Intercalated ducts.

 

 

 

 

 

 

 

 

The answer is: C

 

12- The role of the myoepithelial cells in the salivary glands is:

  1. Defensive mechanism.
  2. Contraction of the acinus.
  3. Prevention of collapse of the acini.
  4. Prevention of extravasation of saliva into the glandular stroma.

 

 

 

 

 

 

 

The answer is: B

 

13- Which of following is most likely to be a product of a salivary gland serous cell?

  1. Collagenase enzymes.
  2. Mucous secretion.
  3. Synovial fluid.
  4. Enzyme which digests starch and other polysaccharides

 

 

 

 

 

 

 

The answer is: D

 

14- Which of the following glands has a purely serous secretion?

  1. Labial
  2. Anterior lingual.
  3. Submandibular.
  4. Von Ebner's.

 

 

 

 

 

 

 

 

The answer is: D

 

15- The secretions of salivary glands are:

  1. Exocrine and holocrine.
  2. Exocrine and merocrine.
  3. Exocrine and apocrine.
  4. Endocrine and merocrine.

 

 

 

 

 

 

 

The answer is: B

 

16- Which minor salivary glands are purely serous:

  1. Lingual glands of Von Ebner.
  2. Lingual glands of Blandin Nuhn.
  3. Palatine glands.
  4. Labial and buccal glands.

 

 

 

 

 

 

 

The answer is: A

 

17- A serous acinar cell has all the following characteristic except:

  1. Numerous secretory granules in apical cytoplasm.
  2. Cytoplasm is abundant and basophilic.
  3. Basal cell membrane has many infolding between which rows of mitochondria are lodged.
  4. Extensive rough endoplasmic reticulum is present.

 

 

 

 

 

 

 

The answer is: C

 

18- The groups of entirely serous adult salivary glands are:

  1. Von Ebner's and palatal.
  2. Parotid and Von Ebner's.
  3. Parotid and submandibular.
  4. Sublingual and submandibular.

 

 

 

 

 

 

 

 

The answer is: B

 

19- The ducts of the salivary glands that are lined by a single layer of tall columnar cells with radially arranged mitochondria are known as:

  1. Lobar ducts.
  2. Striated ducts.
  3. Intercalated ducts.
  4. Interlobar ducts.

 

 

 

 

 

 

 

 

The answer is: B

 

20- Large cells with a small pyknotic nucleus and abundant cytoplasm, mainly in the parotid and submaxillary glands are the:

  1. Myoepithelial cells.
  2. Oncocytes.
  3. Serous cells.
  4. Cells of the intercalated ducts.

 

 

 

 

 

 

 

 

The answer is: B

 

21- Thin branching tubes of varying lengths that connect the terminal portions with the striated ducts of salivary glands are:

  1. Interlobular ducts.
  2. Intercalated ducts.
  3. Intralobular ducts.
  4. lobar ducts. 

 

 

 

 

 

 

 

 

The answer is: B

 

22- Which of the following is not true of parotid glands:

  1. Stenson's duct opens in the cheek opposite maxillary second molar.
  2. Predominantly serous gland.
  3. Long, branching intercalated ducts are present.
  4. Serous demilunes cap mucous secretory units.

 

 

 

 

 

 

 

The answer is: D

 

23- Which of the following is false about sublingual glands:

  1. The excretory duct opens at the sublingual caruncle.
  2. It is a predominantly mucous gland.
  3. They have poorly developed striated ducts.
  4. They have a long branching intercalated duct structure.

 

 

 

 

 

 

 

 

The answer is: D