Exocrine glands Flashcards

1
Q

What are the two categories of galnds?

A

Endocrine and expocrine

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2
Q

What type of tissue are glands derived from?

A

Epithelial tissue

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3
Q

What are endocrine glands?

A

Glands that synthesize and release hormones into the blood

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4
Q

What are exocrine glands?

A

Glands whose secretions are conveyed in epithelial-lined excretory ducts

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5
Q

What significance do glands have in disease?

A

CA (adenoma/carinoma)

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6
Q

How are exocrine glands classified (3)?

A

by the

  1. type of secretion
  2. mode of secretion
  3. cell numbers
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7
Q

What are the four different types of secretions that glands can have?

A

mucous
Serous
Mixed
Sebaceous

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8
Q

What do mucus glands secrete?

A

Secrete mucinogens, large glycosylated proteins (PAS positive), that when hydrated form a thick (viscous), protective fluid called mucin. Mucin is a component of mucus.

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9
Q

What are serous secretions?

A

Watery enzyme laden secretions (parotid and exocrine)

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10
Q

What are mixed gland secretions?

A

serous and mucous

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11
Q

What are sebaceous secretions?

A

waxy oily substances (skin)

Sebum

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12
Q

What are the three classifications that glands can have based on their mode of secretion?

A

Merocrine
Apocrine
Holocrine

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13
Q

What is merocrine secretion?

A

Exocytosis w/o loss of membrane

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14
Q

What is the most common mode of secretion?

A

Merocrine

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15
Q

What is apocrine secretion?

A

Secretory product is released along with apical cytoplasm and apical plasmalemma

(lipids in breast milk)

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16
Q

What is holocrine secretion?

A

When entire cell and its secretory product released

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17
Q

What are the two types of classification of glands based on their cellular number?

A

unicellular

multicellular (organized glands)

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18
Q

What stain would be used to identify goblet cells?

A

PAS (there are glycosylated proteins in mucus)

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19
Q

Acinar cells are formed by the formation of what?

A

Acinus

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20
Q

What are two key characteristics of mucus secreting cells?

A

Pale area where mucus is, and a nucleus pushed/flattened to the periphery

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21
Q

What are the two key characteristics of serous cells?

A

Acidophilic cytoplasm, round nucleus

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22
Q

What are the two key characteristics of sebeaceous cells?

A

Clear cytoplasm

Central, round nucleus

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23
Q

What type of cells/proteins are common with acne?

A

Giant cells

Collagen deposition

24
Q

What are the two major shapes that glands can have? What is the next subdivision?

A

Acinus
Tubular

Simple/complex

25
Q

What are the two divisions of duct systems?

A

Simple

Compound

26
Q

What are simple duct systems?

A

single, unbranched duct conveys secretory product to epithelial surface

27
Q

What are complex ducts?

A

Branching ducts exist which converge to form a single duct

28
Q

What are intralobular ducts?

A

Ducts that are found within the lobule of exocrine glands

29
Q

Goblet cells are what type of glands?

A

Unicellular glands

30
Q

What are the four different types of lobular ducts?

A

Acinus
Intercalated ducts
Striated ducts
Intralobular ducts

31
Q

What are the two intralobular ducsts?

A

Intercalated ducts

Striated ducts

32
Q

What are intercalated ducts?

A

Ducts that run between lobules, and have simple cuboidal cells

33
Q

What is responsible for the striations in the striated ducts?

A

Mitochondria aranged in a palisade

34
Q

Where are interlobular ducts found?

A

Between lobes

35
Q

What are myoepithelial cells?

A

Contractiel cells derived from the epithelium that contain actin and myosin

36
Q

Where are myoepithelial cells found?

A

Surround the secretory units of many of multicellular glands

37
Q

What is the function of myoepithelial cells?

A

Contraction of myoepithelial cells expresses the secretion from the gland

38
Q

What are the two types of compound glands discussed in class?

A

Parotid and submandibular

39
Q

What are the three major identifying factors for striated ducts?

A
  1. Acidophilic
  2. Striations
  3. nuclei push toward opening
40
Q

What is the parotid gland’s classification? What does it secrete?

A

Compound acinar that is purely serous

41
Q

What are submandibular glands’ classification? What do they secrete?

A

Compound tubuloacinar with mixed scretions (primarily serous)

42
Q

What is the sublingual gland’s classification? What does it secrete?

A
Compound tubuloacinar
Primarily mucus (but also serous)
43
Q

What are serous demilunes?

A

Artifacts where a cap of serous cells penetrate between the mucus cells? This is due to prep.

44
Q

What is Sjögren syndrome?

A

Autoimmune disease that causes dry eyes and mouth, and parotid gland swelling

Salivary and lacrimal glands are infiltrated with T cells; glands become fibrotic

45
Q

What are the serological markers for Sjögren syndrome?

A

Serologic marker antibodies are directed against two ribonucleoproteins: SS-A (Ro) and SS-B (La)

46
Q

What type of gland is the pancreas? What is histologicall unique to it?

A

Compound acinar

No striated ducts

47
Q

What is the way to differentiate the pancreas and the parotid?

A

NO striated ducts in the pancreas

centroacinar cells

48
Q

What is the classification of goblet cells?

A

Unicellular

49
Q

What is the classification of the luminal surface of the stomach?

A

Multicellular sheet

50
Q

What is the classification of Paraurethral glands?

A

Simple acinar

51
Q

What is the classification of sebaceous glands?

A

Simple branched acinar

52
Q

What is the classification of intestinal glands?

A

Simple tubular

53
Q

What is the classification of sweat glands?

A

Simple coiled tubular

54
Q

What is the classification of the glands of the stomach hand duodeanal glands?

A

Simple branched tubular

55
Q

What is the classification of the pancreas and parotid glands?

A

Compound acinar

56
Q

What is the classification of the bulbouretheral glands?

A

Compound tubular

57
Q

What is the classification of submandibular and sublingual glands?

A

Ccompound tubuloacinar