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PH 121 > Histology of Digestive Glands > Flashcards

Histology of Digestive Glands Flashcards

1
Q

What is an acinus?

A

group of secretory cells arranged

around a narrow lumen

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2
Q

Short, branching tubular glands lined with mucous

cells that secrete saliva continuously to moisten and lubricate oral mucosa

A

minor salivary glands

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3
Q

False about major salivary glands
A. Branched acinar
B,Secrete in response to sympathetic activity
C. Come in pairs

A

B,Secrete in response to sympathetic activity

dapat parasympathetic`

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4
Q

False about mucous acini
A. Visible lumen
B. Secretion is called mucin (mucus), made up of glycoproteins
C. dark-staining in H&E stain

A

c. dark-staining in H&E stain

light-staining dapat

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5
Q

crescentic layers of serous cells capping

the ends of the mucous acini

A

serous demilunes

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6
Q

Contractile cells that embrace both serous and

mucous acini; Force secretions from the lumen to the duct system

A

myoepithelial cells

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7
Q

amylase is from (serous, mucous) secretions

A

serous

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8
Q

false about intercalated ducts
A) Lined by low cuboidal epithelial cells
B) have stem cell capability
C)Well-developed and striated in mucous glands and
Poorly-developed and non-striated in serous
glands
D)secrete bicarbonate into the acinar product and absorb chloride from the acinar product

A

C)Well-developed and striated in mucous glands and
Poorly-developed and non-striated in serous
glands

dapat: Well-developed and striated in serous glands and
Poorly-developed and non-striated in mucous
glands

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9
Q

ducts where sodium is reabsorbed from the primary secretion + potassium & bicarbonate secretion into the secretion

A

striated duct

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10
Q

Striated ducts located in the parenchyma of the

glands (connective tissue)

A

intralobular duct

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11
Q

salivary duct that Passes through the connective tissue stroma of the glands

A

interlobular duct

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12
Q

False about main duct
A. Opens into oral cavity
B. Larger duct systems can bring saliva back to the glands that produced them

A

B. Larger duct systems can bring saliva back to the glands that produced them

They can only bring saliva out. Once saliva is out, it can never go back

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13
Q 
Sequence the parts of the salivary ductal system (from interior to exterior)
A.main
B.interlobar
C.intercalated
D.intralobar
E.striated
A

C then E then D then B then A

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14
Q 
False about parotid glands:
A.Largest of the major salivary glands
B.Secretions are watery serous saliva rich in amylase,
proline-rich proteins
C. dark-staining at H&E
D. duct involved: Wharton's Duct
A

D. duct involved: Wharton’s duct

Stenson’s dapat. Wharton’s: for submandibular

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15
Q 
False about sublingual glands:
A.Smallest of the salivary glands
B.Located underneath the tongue
C.intercalated ducts and striated ducts are short,
difficult to locate, or sometimes absent
D.have watery secretions
A

D.have watery secretions

Parotid gland: has watery secretions
Sublingual gland: has viscous secretions

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16
Q

Submandibular Glands (2)
A.Located beneath the mandible on either side of the
midline
B, Ducts open onto the floor of the mouth near the
frenulum of the tongue
C.Contain both serous and mucinous acini
(predominantly mucous), depicted as serous demilunes
D.duct involved: Stenson’s duct

A

D.duct involved: Stenson’s duct

Wharton’s dapat. Stenson’s: for parotid gland

17
Q

[PANCREATIC ACINI SECRETION CONTROL]

Bile secretion stimulated by ___
Enzyme activation by _____

A

Cholecystokinin

Enterokinase

18
Q

Function of enterokinase

A

protection against activation of
enzymes outside the small intestine to prevent
damage of pancreas

19
Q

Bicarbonate secretion of pancreatic duct system stimulated by ___

A

secretin

20
Q

What is the part of the pancreatic duct system that…

a. Line lumen of the acinus
b. Secrete large amounts of bicarbonate
c. is Pale-staining, low cuboidal/squamous

A

centroacinar cells

21
Q

Main pancreatic duct is called: ____

accessory pancreatic duct is called: ___duct

A

Main pancreatic duct is called duct of Wirsung

accessory pancreatic duct is called: duct of Santorini

22
Q 
Sequence the pancreatic duct system parts:
A.interlobar
B.main
C.intercalated
D.intralobular
A

C,D,A,B

23
Q

True or false: The pancreas synthesizes and secretes numerous plasma
proteins into the bloodstream:

A

False. The liver does this.

24
Q

Hepatic sinusoids are ducts between hepatocytes that

collect bile. True or false?

A

False. Bile canaliculi are ducts between hepatocytes that

collect bile.

25
Q 
Blood vessels in the liver that receive the following:
* Oxygenated blood from hepatic
artery
* Deoxygentaed nutrient-rich blood
from hepatic portal vein
A

hepatic sinusoids

26
Q

True or false: Hepatic portal vein collects blood that has passed through the
liver which is then emptied into the inferior
vena cava.

A

False. Hepatic vein ang gumagawa nito.

27
Q

blood vessel in the liver that supplies poorly-oxygenated blood
that has already circulated through
the intestines, and is rich in
absorbed nutrients

A

hepatic portal vein

28
Q

Deep fissure that contains: Hepatic portal vein, Hepatic artery, Common bile duct

A

porta hepatis

29
Q

True or false: Bile flows in the same way that blood does.

A

False. Bile flow is opposite blood flow.

30
Q

False about Classic Lobule Model

i. Shape: Triangular
ii. Center: Central Vein
iii. Corners: Portal Triad

A

i. Shape: Triangular

Hexagonal dapat.

31
Q

Portal Lobule (Model: Bile Secretion)

i. Shape: Triangular
ii. Center: Portal Triad
iii. Corners: Hepatic sinusoids

A

iii. Corners: Hepatic sinusoids

central vein dapat

32
Q

Zones of Oxygenation @ Liver Acinus Model
Which is true?
1. Zone 1 encircles the portal tracts; receives most O2
and nutrients
2. Zone 2 is located around central veins, where
oxygenation is poor
3. Zone 3 is located in between.

A
  1. Zone 1 encircles the portal tracts; receives most O2
    and nutrients

Zone 2 is between Zone 1 and Zone 3, the oxygen-poor region that is near the central vein

33
Q

perisinusoidal space between basal surfaces
of the endothelial cells and the surfaces of the
hepatocytes

A

Space of Disse

34
Q

principal bile pigment; derived

from heme of recycled RBC’s

A

bilirubin

35
Q

The gall bladder does not just store bile; it absorbs __ and ions to concentrate bile

A

water

PH 121 (5 decks)

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