GI - Histo: Images Only

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117 Terms

1
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<p>what gland is this from? how do you know?</p>

what gland is this from? how do you know?

- parotid

- we see acinar cells with perfectly round nuclei

- serous secretions only, mucus is rare

- the unstained cells are adipose cells

<p>- parotid</p><p>- we see acinar cells with perfectly round nuclei</p><p>- serous secretions only, mucus is rare</p><p>- the unstained cells are adipose cells</p>
2
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<p>what gland is this from? how do you know?</p>

what gland is this from? how do you know?

- submandibular gland

- we see a mix of acinar cells (well-stained) with perfectly round nuclei and tubule cells with flattened nuclei

- although there is a mix of serous and mucous cells, there are more serous cells

<p>- submandibular gland</p><p>- we see a mix of acinar cells (well-stained) with perfectly round nuclei and tubule cells with flattened nuclei</p><p>- although there is a mix of serous and mucous cells, there are more serous cells</p>
3
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<p>what gland is this from? how do you know?</p>

what gland is this from? how do you know?

- sublingual gland

- we see more mucus tubule cells (with flattened nucleus pushed to basal end of cell) than we do serous cells (round nucleus, well stained)

- mucous cells outnumber acinar cells and more mucus is produced in this gland

<p>- sublingual gland</p><p>- we see more mucus tubule cells (with flattened nucleus pushed to basal end of cell) than we do serous cells (round nucleus, well stained)</p><p>- mucous cells outnumber acinar cells and more mucus is produced in this gland</p>
4
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<p>secretions from this gland will be serous or mucous?</p>

secretions from this gland will be serous or mucous?

serous

- this is from the parotid gland

- note: no mucous tubule cells (all cells are well-stained with perfectly round nuclei)

<p>serous</p><p>- this is from the parotid gland</p><p>- note: no mucous tubule cells (all cells are well-stained with perfectly round nuclei)</p>
5
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<p>what type of secretions do you expect from this gland?</p>

what type of secretions do you expect from this gland?

both serous and mucous

- contains both tubule mucous cells (poorly stained, nuclei pushed toward basal end of cell) and acinar cells (well stained cells w/ perfectly round nuclei)

<p>both serous and mucous</p><p>- contains both tubule mucous cells (poorly stained, nuclei pushed toward basal end of cell) and acinar cells (well stained cells w/ perfectly round nuclei)</p>
6
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<p>what gland is this from? how do you know?</p>

what gland is this from? how do you know?

sublingual

- mucous cells (poorly stained w/ flattened nucleus) outnumber acinar cells

<p>sublingual</p><p>- mucous cells (poorly stained w/ flattened nucleus) outnumber acinar cells</p>
7
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<p>what epithelium type is found at the location labeled "0"</p>

what epithelium type is found at the location labeled "0"

simple cuboidal

- cell is wider than it is tall

- intercalated duct

<p>simple cuboidal</p><p>- cell is wider than it is tall</p><p>- intercalated duct</p>
8
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<p>0</p>

0

intercalated duct

<p>intercalated duct</p>
9
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<p>1</p>

1

striated duct

<p>striated duct</p>
10
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<p>what epithelium is found in the location labeled with a 1</p>

what epithelium is found in the location labeled with a 1

simple columnar

- cell is taller than it is wide

- striated duct

<p>simple columnar</p><p>- cell is taller than it is wide</p><p>- striated duct</p>
11
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<p>0</p>

0

intercalated duct

<p>intercalated duct</p>
12
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<p>1</p>

1

striated duct

<p>striated duct</p>
13
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<p>?</p>

?

intercalated duct

- simple cuboidal

<p>intercalated duct</p><p>- simple cuboidal</p>
14
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<p>?</p>

?

striated duct

- simple columnar

- note: striations

<p>striated duct</p><p>- simple columnar</p><p>- note: striations</p>
15
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<p>does modification of saliva happen at the location labeled "0"?</p>

does modification of saliva happen at the location labeled "0"?

NO, this is an excretory duct, salivary modification only happens in the intercalated and striated ducts

<p>NO, this is an excretory duct, salivary modification only happens in the intercalated and striated ducts</p>
16
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<p>0</p>

0

excretory duct

- no salivary modification happens here

<p>excretory duct</p><p>- no salivary modification happens here</p>
17
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what epithelium is found in the location labeled "0"?

pseudostratified epithelium

18
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<p>1</p>

1

striated duct

<p>striated duct</p>
19
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<p>in which location, 0 or 1, do you expect salivary modification to occur?</p>

in which location, 0 or 1, do you expect salivary modification to occur?

1

- 1 is a striated duct

- 0 is an excretory duct, NO modification occurs here

<p>1</p><p>- 1 is a striated duct</p><p>- 0 is an excretory duct, NO modification occurs here</p>
20
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<p>?</p>

?

myoepithelial cells in salivary glands

<p>myoepithelial cells in salivary glands</p>
21
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<p>?</p>

?

myoepithelial basket cell

<p>myoepithelial basket cell</p>
22
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<p>?</p>

?

myoepithelial cells seen with Actin IHC staining

<p>myoepithelial cells seen with Actin IHC staining</p>
23
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<p>?</p>

?

striated duct

note:

- striations (infolding of basement membrane with mitochondria in between)

- perfectly round nuclei pushed apically

<p>striated duct</p><p>note:</p><p>- striations (infolding of basement membrane with mitochondria in between)</p><p>- perfectly round nuclei pushed apically</p>
24
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<p>0</p>

0

muscularis externa (outer longitudinal, inner circular)

<p>muscularis externa (outer longitudinal, inner circular)</p>
25
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<p>1</p>

1

submucosa

<p>submucosa</p>
26
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<p>2</p>

2

mucosa

<p>mucosa</p>
27
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<p>3</p>

3

adventitia/serosa

<p>adventitia/serosa</p>
28
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<p>4</p>

4

muscularis mucosae

<p>muscularis mucosae</p>
29
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<p>black arrows (at the bottom)?</p>

black arrows (at the bottom)?

lining epithelium (SSNKE)

<p>lining epithelium (SSNKE)</p>
30
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<p>what is the function of the circled glands?</p>

what is the function of the circled glands?

secretes watery fluid into the sulcus of the taste bud to flush it so we can taste

- these are Ebner's glands

<p>secretes watery fluid into the sulcus of the taste bud to flush it so we can taste</p><p>- these are Ebner's glands</p>
31
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<p>what is circled?</p>

what is circled?

Ebner's glands

<p>Ebner's glands</p>
32
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<p>what pathology is pictured here?</p>

what pathology is pictured here?

Sjogren's syndrome

<p>Sjogren's syndrome</p>
33
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<p>what is labeled in the image?</p>

what is labeled in the image?

labial glands

<p>labial glands</p>
34
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<p>0</p>

0

epithelium (SSNKE)

<p>epithelium (SSNKE)</p>
35
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arrow

lamina propria

36
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2

muscularis mucosae

37
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3

submucosa

38
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<p>describe this image</p>

describe this image

this image is a histological section of the middle 1/3 of the esophagus

note: the mix of smooth and skeletal muscle representative of the partial voluntary, partial involuntary control of swallowing at this point in the esophagus

<p>this image is a histological section of the middle 1/3 of the esophagus</p><p>note: the mix of smooth and skeletal muscle representative of the partial voluntary, partial involuntary control of swallowing at this point in the esophagus</p>
39
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<p>?</p>

?

esophageal glands

- mucosal and serous

<p>esophageal glands</p><p>- mucosal and serous</p>
40
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<p>pictured are esophageal glands found in what layer?</p>

pictured are esophageal glands found in what layer?

submucosal

<p>submucosal</p>
41
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?

ducts in esophagus

- stratified cuboidal epithelium

- barium goes into ducts

42
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<p>?</p>

?

barium esophagram showing ducts of esophageal submucosal glands

<p>barium esophagram showing ducts of esophageal submucosal glands</p>
43
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<p>?</p>

?

squamocolumnar mucosal junction

- zig-zag line

<p>squamocolumnar mucosal junction</p><p>- zig-zag line</p>
44
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<p>identify the pathology</p>

identify the pathology

Barrett's esophagus

- irregular squamocolumnar junction

<p>Barrett's esophagus</p><p>- irregular squamocolumnar junction</p>
45
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<p>what is pictured here? (big picture)</p>

what is pictured here? (big picture)

normal squamocolumnar junction

<p>normal squamocolumnar junction</p>
46
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<p>1</p>

1

esophageal epithelium

<p>esophageal epithelium</p>
47
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<p>2</p>

2

gastric epithelium

<p>gastric epithelium</p>
48
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<p>arrows?</p>

arrows?

goblet cell mucins stained with alcian blue

<p>goblet cell mucins stained with alcian blue</p>
49
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<p>what pathology?</p>

what pathology?

Barrett's esophagus

<p>Barrett's esophagus</p>
50
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<p>1</p>

1

SSNKE (esophagus epithleium)

<p>SSNKE (esophagus epithleium)</p>
51
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<p>2</p>

2

columnar epithelium (metaplasia)

<p>columnar epithelium (metaplasia)</p>
52
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<p>what is shown in the image?</p>

what is shown in the image?

gastroesophageal junction

<p>gastroesophageal junction</p>
53
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term image

surface mucous cells

<p>surface mucous cells</p>
54
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term image

surface mucous cells

<p>surface mucous cells</p>
55
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term image

mucous neck cells

<p>mucous neck cells</p>
56
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<p>single black arrow?</p>

single black arrow?

intracellular cannaliculus

<p>intracellular cannaliculus</p>
57
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<p>red arrows?</p>

red arrows?

parietal cells

note:

- eosinophilic staining due to abundance of mitochondria

<p>parietal cells</p><p>note:</p><p>- eosinophilic staining due to abundance of mitochondria</p>
58
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term image

chief cells

note:

- basophilic cytoplasm due to RER

<p>chief cells</p><p>note:</p><p>- basophilic cytoplasm due to RER</p>
59
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<p>arrow</p>

arrow

serosa

<p>serosa</p>
60
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<p>0</p>

0

muscularis externa

<p>muscularis externa</p>
61
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<p>1</p>

1

submucosa

<p>submucosa</p>
62
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<p>2</p>

2

mucosa

<p>mucosa</p>
63
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<p>what is pictured here?</p>

what is pictured here?

gastroduodenal junction

<p>gastroduodenal junction</p>
64
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<p>0</p>

0

inner circular muscle

<p>inner circular muscle</p>
65
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<p>1</p>

1

outer longitudinal muscle

<p>outer longitudinal muscle</p>
66
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<p>arrow?</p>

arrow?

Duodenal submucosal Brunner's Glands

<p>Duodenal submucosal Brunner's Glands</p>
67
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term image

plicae circulares

- infolding of submucosa

<p>plicae circulares</p><p>- infolding of submucosa</p>
68
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<p>dotted line?</p>

dotted line?

muscularis mucosa

<p>muscularis mucosa</p>
69
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<p>gray square?</p>

gray square?

epithelial surface cell: enterocyte

<p>epithelial surface cell: enterocyte</p>
70
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<p>0</p>

0

actin core

71
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term image

crypts

<p>crypts</p>
72
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<p>what is the function of the cells pictured?</p>

what is the function of the cells pictured?

controlled absorption

<p>controlled absorption</p>
73
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<p>what is pictured?</p>

what is pictured?

enterocytes in small intestine

<p>enterocytes in small intestine</p>
74
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<p>what is the function of the cell labeled?</p>

what is the function of the cell labeled?

produce mucin to protect and lubricate the inner surface of the small intestine

<p>produce mucin to protect and lubricate the inner surface of the small intestine</p>
75
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term image

goblet cells of the small intestine

<p>goblet cells of the small intestine</p>
76
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<p>which of these is the duodenum? which is the ileum? how can you tell?</p>

which of these is the duodenum? which is the ileum? how can you tell?

left = duodenum

right = ilium

- goblet cell number increases from proximal to distal

<p>left = duodenum</p><p>right = ilium</p><p>- goblet cell number increases from proximal to distal</p>
77
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term image

enteroendocrine cells in intestinal crypts

<p>enteroendocrine cells in intestinal crypts</p>
78
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term image

paneth cells

<p>paneth cells</p>
79
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<p>what is the function of these cells?</p>

what is the function of these cells?

immune surveillance

secrete antimicrobial products:

- lysozyme

- alpha defensins

these are paneth cells found in crypts of the small intestine

<p>immune surveillance</p><p>secrete antimicrobial products:</p><p>- lysozyme</p><p>- alpha defensins</p><p>these are paneth cells found in crypts of the small intestine</p>
80
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term image

paneth cells

<p>paneth cells</p>
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<p>1</p>

1

Peyer's patch in small intestine; the ilium, specifically

- we are getting close to the external environment so we needs stronger immune surveillance

<p>Peyer's patch in small intestine; the ilium, specifically </p><p>- we are getting close to the external environment so we needs stronger immune surveillance</p>
82
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<p>2</p>

2

lumen of small intestine

<p>lumen of small intestine</p>
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term image

small intestine-duodenum

Brunner's glands

<p>small intestine-duodenum</p><p>Brunner's glands</p>
84
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term image

arrow: lacteals

arrowhead: lamina propria

fibroblasts, blood, connective tissue, etc.

<p>arrow: lacteals</p><p>arrowhead: lamina propria</p><p>fibroblasts, blood, connective tissue, etc.</p>
85
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term image

paneth cells

<p>paneth cells</p>
86
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term image

taenia coli

<p>taenia coli</p>
87
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term image

taenia coli

<p>taenia coli</p>
88
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<p>1</p>

1

lymphatic

<p>lymphatic</p>
89
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<p>2</p>

2

muscularis externa

<p>muscularis externa</p>
90
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<p>3</p>

3

submucosa

<p>submucosa</p>
91
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<p>4</p>

4

mucosa

<p>mucosa</p>
92
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term image

colonocytes (dark staining)

- absorptive

goblet cells (light staining)

<p>colonocytes (dark staining)</p><p>- absorptive</p><p>goblet cells (light staining)</p>
93
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<p>what is the role of this cell?</p>

what is the role of this cell?

absorption of water from the apical surface to the basal surface

- these are colonocytes

<p>absorption of water from the apical surface to the basal surface</p><p>- these are colonocytes</p>
94
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term image

colonocytes

<p>colonocytes</p>
95
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<p>black hexagon</p>

black hexagon

classic liver lobule

- centered around a central vein

- endocrine and metabolic functions

<p>classic liver lobule</p><p>- centered around a central vein</p><p>- endocrine and metabolic functions</p>
96
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<p>the black hexagon describes what function of the liver?</p>

the black hexagon describes what function of the liver?

endocrine/metabolic functions

- this is a classic lobule

<p>endocrine/metabolic functions</p><p>- this is a classic lobule</p>
97
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<p>blue shape</p>

blue shape

liver acinus

- centered around incoming blood

- metabolic functions

<p>liver acinus</p><p>- centered around incoming blood</p><p>- metabolic functions</p>
98
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<p>the blue shape describes what function of the liver?</p>

the blue shape describes what function of the liver?

metabolic functions

<p>metabolic functions</p>
99
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<p>yellow triangle</p>

yellow triangle

portal lobule

- centered around bile duct

- exocrine/waste removal functions

<p>portal lobule</p><p>- centered around bile duct</p><p>- exocrine/waste removal functions</p>
100
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<p>the yellow triangle describes what function of the liver?</p>

the yellow triangle describes what function of the liver?

exocrine/waste removal functions

<p>exocrine/waste removal functions</p>