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(SALMA) Histology Formative Questions > gi histology formatives > Flashcards

Flashcards in gi histology formatives Deck (55)
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1
Q

what type of epithelia is found throughout the mouth

A

stratified squamous non-keratinising epithelium

2
Q

in the most 1/3 of the tongue, what does the epithelium overlie

A

a lymphoid infiltrate

3
Q

where are the circumvalate papillae

A

(form a V shape line) btwn anterior 2/3 and post 2/3 of tongue

4
Q

what do filiform papillae do

A

roughen the surface of the tongue

5
Q

what are the numerous papillae on the tongue

A

filiform papillae

6
Q

what do mucous glands have

A

cytoplasm

7
Q

what type of a gland is a parotid gland

A

purely serous

8
Q

what is the submandibular gland

A

mixed mucous and serous

9
Q

what type of glands are the sublingual, buccal and lingual glands

A

mucous

10
Q

what kind of epithelium do the mouth and oesophageal mucosa share

A

non-keratinising stratified squamous epithelium

11
Q

what is there in the submucosa of the oesophagus

A

lymphocytes

12
Q

what is unique to the oesophagus

A

ducts

13
Q

what doesn’t the gastric antrum have that the body and funds do

A

parietal cells

14
Q

what is present in the gastric antrum

A

long crypts (lined by mucous secreting cells)

15
Q

what are the parts of the stomach (top to bottom)

A
(oesophagus)
fundus
body
antrum
pylorus
(duodenum)
16
Q

what do parietal cells secrete

A

HCl

intrinsic factor

17
Q

what does intrinsic factor do

A

plays a role in the absorption of vitamin B12

18
Q

what do chief cells secrete

A

pepsinogen

19
Q

what is pepsinogen cleaved to (and where)

A

pepsin - in the gastric lumen

20
Q

what are the villi like in the duodenum

A

broad and leaf like

21
Q

what is chyme

A

digested food that leaves the stomach

22
Q

what does the ileum look like in histology

A

has villous architecture

prominent Peyer’s patches ib submucosa and mucosa

23
Q

what is present in the ileum but not jejunum or duodenum

A

Peyer’s patches (prominent lymphoid aggregates)

24
Q

what are the 2 autonomic nerve plexuses that innervate the GI tract

A

Meissner’s plexus (submucosa)

Auerbach’s plexus (btwn layers of muscular propria)

25
Q

where does Meissner’s plexus lie

A

in the submucosa

26
Q

where does Auerbach’s plexus lie

A

btwn layers of muscular propria

27
Q

what is the colon’s muscular propria like

A

double-layered

inner circular
outer longitudinal

28
Q

how does the histology of diff parts of colon differ

A

it doesn’t - it’s the same

29
Q

what does the epithelium of the colon comprise of

A

single columnar layer of mucus-secreting enterocytes

30
Q

what lies at the centre of the classic liver lobule

A

central hepatic venue

31
Q

what is a classic lobule

A

roughly hexagonal - area drained by 1 central hepatic vein

32
Q

what are 2 functions of hepatocytes

A

bile synthesis/secretion

albumin synthesis

33
Q

what are the phagocytes of the liver

A

kuppfer cells

34
Q

what are the antigen presenting cells of the liver and where are they found

A

ito cells

space of Disse

35
Q

does the liver synthesise angiotensinogen

A

yes

36
Q

does the liver synthesise angiotensin II

A

no

37
Q

what is a bile ductule lined by

A

simple cuboidal epithelium

38
Q

how are hepatocytes supported

A

meshwork of type 3 collagen (reticulin)

39
Q

what does the smooth ER of hepatocytes have

A

enzymes which inactivate drugs n toxins

40
Q

what does the rough ER of hepatocytes play a role in

A

synthesis of plasma proteins

41
Q

what do hepatocytes usually contain

A

glycogen particles

42
Q

what do Ito cells store

A

fat

43
Q

how does blood flow to the central veins

A

portal vein and hepatic artery - through hepatic sinusoids -central veins

44
Q

how much of the liver’s mood supply is from the hepatic artery

A

30%

45
Q

what is bile secreted by

A

heptocytes

46
Q

what colour do kupffer cells come up as in histology

A

blue with Perls’ stain

47
Q

what are kupffer cells derived from

A

monocytes

48
Q

which cells are derived from basophils

A

mast cells

49
Q

where do kupffer cells lie

A

hepatic sinusoids

50
Q

name 4 features of hepatocytes

A
  • polygonal epithelial cells
  • microvillous brush border
  • may be binucleate
  • abundant mitochondria
51
Q

what is the gallbladder epithelium like

A

columnar, with a prominent microvillous brush border

52
Q

how do the cells of the gallbladder concentrate bile secreted by hepatocytes

A

by absorbing water

53
Q

does the gallbladder have muscular mucosae

A

no

54
Q

what do acinar cells secrete

A

a variety of enzymes - in precursor form

55
Q

what is albumin made by

A

hepatocytes