Oral Histology 2 Exam - Final Corrected

1- Actin filaments in myoepithelial cell?

........................................................................................................................

• Contractile function
• Expel saliva from the acini and intercalated ducts
• Support to parenchymal elements

2- Odland bodies in keratinized epithelium?

........................................................................................................................

• Thickening of cell membrane
• Limit diffusion between cells

1- Areas of masticatory mucosa:

a- ........................................................

b- ........................................................

• Gingiva
• Hard palate

2- Intra-lobular ducts of salivary glands:

a- ........................................................

b- ........................................................

• Intercalated duct
• Striated duct

3- Clear and dendritic non keratinocytes:

a- ........................................................

b- ........................................................

• Pigment cell (Melanocyte)
• Langerhans cell

1- A salivary gland that opens at the bottom of the lingual crypt.

2- A layer characterized by loss of its cellular organelles and is packed with tonofilaments.

3- Secretory granules of mucous cell.

4- Thickening of adjacent cell membrane, a pair of attachment plaques, intervening extra cellular structure and tonofilaments.

1- The longest intercalated duct is detected in the submandibular gland.

2- The non-keratinized epithelium is thicker than the keratinized one.

3- Stratum germinativum is formed of basal and granular cell layers.

4- The mucous cells are rich in rough endoplasmic reticulum and have 4-6 Golgi saccules.

1- Which of the following is typically one of the features of the serous acini?

A) Tubular with narrow central lumen. B) Tubular with wide central lumen. C) Spherical with narrow central lumen. D) Spherical with wide central lumen.

2- Which of the following mostly describes the layer of the lamina propria just beneath the basement membrane?

A) Papillary layer. B) Reticular layer. C) Submucosa. D) Mucosa.

3- Which of the following usually represents an age change in major salivary glands?

A) Myoepithelial cell. B) Oncocytes. C) Osteocyte. D) Fibroblast.

4- Which of the following is typically an antibacterial protein secreted from intercalated duct?

A) Lysozymes. B) Lactoferrin. C) Peroxidase. D) Lipase.

5- Which of the following are mainly the parenchymal elements of salivary glands?

A) Acini, ducts and connective tissue. B) Acini, ducts and myoepithelial cells. C) Acini, myoepithelial cells and connective tissue. D) Acini, ducts, and submucosa.

6- Which of the following glands most likely produce the greatest amount of salivary secretion?

A) Parotid. B) Sublingual. C) Submandibular. D) Palatal.

7- Which of the following mostly describes demilune of von Ebner?

A) Serous cap over mucous blind end. B) Mucous cap over mucous blind end. C) Mucous cap over serous blind end. D) Serous cap over mucous blind end.

8- Which of the following is mainly the secretion of parotid gland in newborns?

A) Pure mucous. B) Pure serous. C) Mixed. D) Fatty.

9- Which of the following is mainly one of the glands of the oral cavity proper?

A) Labial gland. B) Glossopalatine gland. C) Buccal gland. D) Parotid gland.

10- Which of the following is typically the end of the duct system of salivary glands?

A) Intercalated duct. B) Striated duct. C) Small excretory duct. D) Main duct.

11- Which of the following is the best feature for buccal mucosa?

A) Has a keratinized epithelium. B) Has no connective tissue papillae. C) Is firmly attached to the underlying tissues. D) Is loosely attached to the underlying tissues.

12- Which of the following mainly describes the basal striations in the striated duct?

A) Membrane folding and accumulated ribosomes. B) Membrane folding and accumulated rough endoplasmic reticulum. C) Membrane folding and elongated mitochondria. D) Membrane folding and accumulated Golgi apparatus.

13- Which of the following is usually the lining of the excretory ducts of salivary glands?

A) Pseudostratified columnar epithelium with goblet cells. B) Columnar epithelium without goblet cells. C) Simple columnar epithelium. D) Columnar ciliated epithelium with goblet cells.

14- Which of the following are typically the method of secretion of salivary glands?

A) Exocrine and holocrine. B) Exocrine and merocrine. C) Exocrine and apocrine. D) Endocrine and merocrine.

15- Which of the following functions of saliva that mostly denotes help in maintenance of tooth integrity?

A) Digestive function. B) Prevention of demineralization. C) Lubrication of oral tissues. D) Helping in wound healing.

16- Which of the following is typically the cell that needs DOPA reaction for characterization?

A) Melanocytes. B) Merkel cells. C) Langerhans cells. D) Granular cells.

17- Which of the following is usually not present in the stratum spinosum of keratinized epithelium?

A) Desmosomes. B) Tonofilaments. C) Odland's bodies. D) Keratohyaline granules.

18- Which of the following is most likely pure mucous salivary gland?

A) Von Ebner gland. B) Submandibular gland. C) Minor sublingual gland. D) Buccal glands.

19- Which of the following typically describes the importance of keratohyaline granules in keratinized mucosa?

A) Thickening of cell membrane. B) Control substances diffusion. C) Synthesis of keratin. D) Secretion of antibodies.

20- Which of the following is mainly considered as a temporary cell in the oral epithelium?

A) Melanocyte. B) Lymphocyte. C) Merkel cell. D) Langerhans cell.

1	Lingual gland (weber)
2	Cornified layer
3	Mucinogen granules
4	Desmosome

1	❌ → Parotid gland
2	✔️
3	❌ → Basal and spinous layers
4	❌ → Serous cells

FACULTY OF ORAL AND DENTAL MEDICINE

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