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Cell Bio III > Exocrine glands > Flashcards

Exocrine glands Flashcards

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Biology 101 flashcards
1
Q

Exocrine glands are derived from what type of tissue?

A

Epithelial

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2
Q

How are exocrine glands classified?

A
  1. Type of secretion
  2. Mode of secretion
  3. Cell numbers
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3
Q

What do mucous glands secrete?

A

Mucinogens

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4
Q

What is mucin?

A

Hydrated mucinogens

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5
Q

What are examples of mucous glands?

A
  1. Goblet cells

2. Mucous cells

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6
Q

What are mixed glands?

A

Contain serous and mucous secretory uits

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7
Q

What are examples of mixed glands?

A
  1. Submandibular gland

2. Sublingual gland

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8
Q

What are characteristics of merocrine secretion?

A
  1. Exocytosis
  2. No loss of plasmalemma or cytoplasm
  3. Most common
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9
Q

What are characteristics of apocrine secretion?

A
  1. Secretory product is released along with apical cytoplasm and apical plasmalemma
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10
Q

Mammary glands use what type of secretory gland process for lipids?

A

Apocrine

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11
Q

What are characteristics of holocrine secretion?

A

The entire cell and its secretory product is released

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12
Q

Sebaceous glands use what type of secretory gland process?

A

Holocrine

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13
Q

What are the two shapes of secretory units?

A
  1. Acinus (aka alveolar)

2. Tubular

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14
Q

What are examples of simple duct systems that do not have an excretory duct?

A

Stomach / intestinal glands

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15
Q

What are two types of intralobular ducts?

A
  1. Intercalated

2. Striated

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16
Q

What are myoepithelial cells?

A

Contractile cells derived from epithelium

17
Q

Myoepithelial cells contain what types of filaments?

A

Actin and myosin

18
Q

How would you confirm the epithelial origin of myoepithelial cells?

A

Cytokeratin

19
Q

Where are myoepithelial cells located?

A

Surround the secretory units of many multicellular glands (mamary, sweat, large salivary) and small ducts and share their basal lamina

20
Q

How are myoepithelial cells connected to epithelial cells?

A

Desmosomes and gap junctions

21
Q

What is the classification of the parotid gland?

A

Compound acinar

22
Q

Is the parotid gland purely serous, purely mucous, or mixed?

A

Purely serous

23
Q

What kind of intralobular ducts does the parotid gland have?

A

Intralobular and intercalated

24
Q

What is the classification of the submandibular gland?

A

Compound tubuloacinar

25
Q

Is the submandibular gland purely serous, purely mucous, or mixed?

A

Mixed, but mostly serous (demilune parts)

26
Q

Are serous demilunes present in living tissue?

A

No

27
Q

What are the characteristics of the intralobular ducts in the submandibular gland?

A

Prominent striated ducts, short intercalated ducts

28
Q

What is the classification of the sublingual gland?

A

Compound tubuloacinar

29
Q

Is the sublingual gland purely serous, purely mucous, or mixed?

A

Mixed, but mostly mucous (serous demilunes are sparse)

30
Q

What are the characteristics of the intralobular ducts in the sublingual gland?

A

Less developed than those of other salivary glands

31
Q

What are some symptoms of Sjogren syndrome?

A

Dry eyes, dry mouth, dysphagia, dysphonia, difficulty tasting, cracked lips, parotid enlargement by 50%

32
Q

What is the classification of the pancreas?

A

Compound acinar

33
Q

The pancreas is most similar to what other gland?

A

Parotid

34
Q

What differentiates the pancreas from the parotid gland?

A
  1. Islets of Langerhans
  2. Centroacinar cells
  3. Absence of striated ducts
35
Q

What feature is unique to the pancreas?

A

Centroacinar cells

36
Q

What are the characteristics of the intralobular ducts in the pancreas?

A
  1. Centroacinar cells represent the intra-acinar segment of the intercalated duct
  2. Large intralobular ducts
  3. Interlobular ducts
  4. Duct cells secrete bicarbonate

Cell Bio III (10 decks)

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