Lecture 10

Question 1

Structure of a Compound Gland

1. What is a lobule?
2. What is a lobule equivalent to?
3. What shapes might the secretory unit of a lubule take on?

Answer 1

1. Subunits of a compound gland
2. Simple branched gland
3. Alveolar (acinar), or tubuloalveolar (-acinar)

Question 2

Structure of a Compound Gland

1. What is the Parenchyma?
2. What is the stroma?

Answer 2

1. The components of the gland derived from epithelium
2. The connective tissue capsule surrounding the entire gland. Includes partitions separating the lobules.

Question 3

Structure of a Compound Gland

1. Septa (trabeculae)
2. Lobes
3. Lobule
4. Delicate septae

Answer 3

1. Extensions of the stroma into the epithelial components. Divides gland into lobes and lobules
2. Subdivision of a compound gland separated from other lobes by septae
3. Subdivision of a lobe. Separated from other lobules by delicate septae. Equivalent to a simple, branched gland
4. Separates lobules

Question 4

Structure of a Compound Gland: Acinus

1. What is the acinus?
2. What classifications can it take on?
3. What is it covered by?
4. Myoepithelial cells: location and function.

Answer 4

1. Secretory component of a lobule
2. Serous, mucous, mixed
3. Basement membrane
4. Between basement membrane and acinus. Help to express secretions of acini via contractility.

Question 5

Ductal Structure of a Compound Gland: Intralobular Ducts

1. Found where?
2. Two types?

Answer 5

1. Ducts within a lobule
2. Intercalated and Striated

Question 6

Ductal Structure of a Compound Gland: Intralobular Ducts - Intercalated ducts

1. Function
2. Lined by what type of cells?
3. Involved in?

Answer 6

1. Drain secretory acini
2. Simple squamous
3. Bicarb/chloride ion exchange

Question 7

Ductal Structure of a Compound Gland: Intralobular Ducts - Striated duct

1. Lined by what?
2. Function?

Answer 7

1. Cuboidal epithelium
2. Actively reabsorbs Na ions, passively reabsorb Cl ions, actively secrete K ions

Question 8

Ductal Structure of a Compound Gland: Interlobular Ducts

1. Formed by what?
2. Lined with what?

Answer 8

1. Confluence of two or more striated ducts
2. pseudostratified columnar epithelium

Question 9

Ductal Structure of a Compound Gland: Intralobar Ducts

1. Joined by what?
2. Lined by what?

Answer 9

1. Confluence of two or more interlobular ducts
2. Columnar epithelium transitioning into stratified columnar epithelium

Question 10

Ductal Structure of a Compound Gland: Lobar Duct

1. Formed by what?
2. Lined with what?

Answer 10

1. confluence of two or more intralobar ducts
2. stratified columnar epithelium

Question 11

Histological Comparison of Salivary Glands: Minor Salivary Glands

1. Located where?
2. Include what?
3. Function?

Answer 11

1. throughotu the oral cavity
2. Von Ebner’s glands, labial glands, palatal glands, buccal glands
3. Keep surface of oral cavity moist

Question 12

Histological Comparison of Salivary Glands: Major Salivary Glands

1. Parotid Glands: composition
2. Submandibular glands: composition
3. Submandibular glands: demilunes
4. Sublingual glands: composition and difference from submandibular

Answer 12

1. Serous acini only (easy to ID)
2. Mixed
3. Form a crescent-shaped configuration around the mucous acini
4. Mixed. Mucous acini are predominant.