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digestive system > Microbiology Of Gis > Flashcards

Microbiology Of Gis Flashcards

1
Q

Acquiring gastroenteritis can be through….?

A

foodborne, waterborne, person-to- person,
zoonotic spread.

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2
Q

What is gastroenteritis

A

is inflammation of the lining of the stomach and small and large intestines.

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3
Q

Viral gastroenteritis are mainly transmitted through……?

A

Fecal-oral route

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4
Q

What is the diagnosis of norovirus?

A

Pcr

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5
Q

What is the type of epith in the small intestine?

A

Enterocytes which are columnar cells

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6
Q

The …….. increases the apical surface area in the small intestine and form striated border when looked at under light microscope

A

Microvilli

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7
Q

Enterocytes:
• Goblet cells, ….
• Paneth cells,…….
• Enteroendocrine cells,
• M cells (microfold cells),……..

A

whose primary function is absorption

unicellular mucin-secreting glands

whose primary function is to maintain mucosal innate immunity by secreting antimicrobial substances

which produce various paracrine and endocrine hormones

specialized cells located in the epithelium that covers lymphatic nodules in the lamina propria

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8
Q

the number of ……………increases from duodenum to ileum.

A

goblet cells

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9
Q

……… are most numerous in upper parts, their number slowly decreasing toward the lower end
of the tract

A

Enterocytes

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10
Q

What are the types of structures on the large intestine?

A

No villus
Has simple tubular glands
Crypts
Higher ratio of goblet cells to enterocytes
Microvilli
Epithelial stem cells

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11
Q

The ascending and descending segments of colon are covered posteriorly by adventitia so they are called?

A

Retroperitoneal

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12
Q

Which layer in the large intestine has large amounts of adipose tissue?

A

Submucosa

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13
Q

Which type of intestinal helminth inhabit the human gut, is doesn’t kill but impairs physical and mental growth of children,is a nematode(round worm)

A

Ascaris lumbricoides

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14
Q

What is the way of transmission of Ascaris lumbricoides?

A

Food eaten raw s.a vegetables, polluted water
Fecal-oral route

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15
Q

What is the most fatal clinical symptom of Ascaris lumbricoides?

A

Intestinal obstruction

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16
Q

What is the only nematode that can be coughed up?

A

Ascaris

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17
Q

Where does the larvae pf the ascaris lumbricoides mature?

A

In lungs

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18
Q

Which parasite causes anemia? And why?

A

Nector americanus and ancylostoma duodenale
Bcz they feed on blood

19
Q

Which nematodes cause infection via skin penetration

A

Nector americanus and ancylostoma duodenale & (strongyloides)

20
Q

Trichuris, ascaris, strongyloides, ancylostoma duodenale, and nectar americanus are which type of helminths?

A

Nematodes

21
Q

What are two ex of cestodes?

A

Taenia saginata (beef tapeworm)
Taenia solium (pork tapeworm)

22
Q

Lips of ascaris are ….

A

Denticulate

23
Q

How many teeth does ancylostoma duodenale have?

A

4

24
Q

How many teeth does necator americanus have?

A

2

25
Q

Where does necator americanus and ancylostoma duodenale mature?

A

Small intestine

26
Q

Which helminth is describes as being a “whip worm”, and looks like a barrel-shaped eggs or a lemon, causes severe infection (RECTAL PROLAPSE)

A

Trichuris

27
Q

Which parasite can cause hyperinfection(overpopulation of parasite) , and impaired host immunity, and autoinfection?

A

Strongyloides

28
Q

Which parasite causes bladder carcinoma ?

A

Schistosoma haematobium

29
Q

What does the fasciola hepatica cause?

A

Hepatitis

30
Q

Which type of parasite Cestode contains cysticerci (larval parasite)?

A

Taenia saginata (beef tapeworm)

31
Q

The most important feature of …….. is the risk of development of cysticercosis?

A

Taenia solium taeniasis

32
Q

What is the main symptom of taenia saginata (beef tapeworm)?

A

Passage (passive) of proglottids(reproductive part)

33
Q

What is an imp feature of entamoeba histolytica (amoebiasis)?

A

Chocolate pus
And dysentery (blood in stool)

34
Q

What is the clinical manifestations of entamoeba histolytica (amoebiasis)?

A

Flask shaped ulcers
Pin-point lesion

35
Q

Which parasite causes ameobic colitis(dysentery) and non-dysenteric colitis and appendicitis( obstruction of appendic)?

A

entamoeba histolytica (amoebiasis)?

36
Q

What is used to dectect cryptosporidium cyst in stool?

A

Acid fast stain

37
Q

Cryptosporidium cyst is usually seen in which patients?

A

HIV & AIDS patients

38
Q

What is the 2nd step of abdominal examination?

A

Auscultation

39
Q

What is the transmission way of entamoeba histolytica (amoebiasis)?

A

Contaminated food and water

40
Q

Which pathogen causes traveler’s diarrhea?

A

Enterotoxigenic strain

41
Q

Which parasite causes traveler’s diarrhea?

A

Giardiasis

42
Q

Which is the only symptom of giardiasis intestinalis?

A

Watery diarrhea

43
Q

Which parasite is detected with acid fast stained stool?

A

Cryptosporidium cyst

44
Q

the hydatid cyst is caused by ……..

A

infection of the larval stage of Echinococcus granulosis

digestive system (4 decks)

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