GIT ~ Histology

Question 1

4 layer of GI Tract From Inside to Outside

Answer 1

Mucosa
Sub-Mucosa
Muscularis Externa
Serosa/Adventitia

Question 2

Lip to Esophagus ________________ Epithelium

Answer 2

Stratified Sqaumous Non Keratinized Epithelium

Question 3

3 Layers of Mucosa

Answer 3

Epithelial Layer
Lamina Propria
Muscularis Interna

Question 4

Hard Palate & Gingiva lined by __________________ Epithelium

Answer 4

Para-keratinised Stratified Sqaumous Epithelium ~ has Nucleus

Question 5

Difference between Keratinised and Para-Keratinised Epithelium

Answer 5

In para-keratinised Nucleus is Present whereas in keratinised ~ absent

Question 6

Epithelium in

Stomach ~

Small Intestine ~

Answer 6

Stomach ~ Simple Columnar Epithelium

Small Intestine ~ Simple Columnar with Microvilli

Question 7

Epithelium in Large Intestine Upto Pectinate Line ~

Answer 7

Simple Columnar Epithelium

Question 8

Epithelium in Large Intestine from Pectinate Line to Hilton’s line

Answer 8

Stratified Squamous Non Keratinised Epithelium

Question 9

Epithelium in anal canal Below Hilton’s Line

Answer 9

Stratified Squamous Keratinised Epithelium

Question 10

GALT present in which layer

Answer 10

Lamina Propria

In the Ileum Payer’s Patches Present in Lamina Propria

Question 11

Pyloric and Cardiac Glands of Stomach present in which layer

Answer 11

Lamina Propria

Question 12

Lamina Propria Contains

Answer 12

Connective Tissues

GALT

Intestinal Gland

Pyloric and Cardiac Glands of Stomach

Question 13

Strongest layer of GIT

Answer 13

SubMucosa

Contains;

Meissner’s Plexus

Bruner’s Gland (Duodenum)
Esophageal Gland

Question 14

Bruner’s Gland in Duodenum and

Esophageal Gland present in which layer

Answer 14

Sub Mucosa

Question 15

Muscularis Externa Of Esophagus

Upper 1/3
Middle 1/3
Lower 1/3

Answer 15

Upper 1/3 ~ Skeletal Muscle
Middle 1/3 ~ Skeletal + Smooth
Lower 1/3 ~ Smooth Muscle

Question 16

Auerbach Plexus present in which layer

Answer 16

Muscularis Externa

Question 17

Parts of Gastric Gland

Answer 17

Neck ~ Mucous Neck Cells
Body ~ Parietal / Oxyntic Cells
Fundus ~ Chief / Peptic Cells

Question 18

Parietal / Oxyntic Cells Secretes

Answer 18

HCl and Intrinsic Factor

Eosinophilic cells with Round nucleus

Question 19

Argentaffin cells found in which part of Gastric Gland

Answer 19

Fundus of Gland

Neuroendocrine Cell ~ Secrets Gastrin Hormone

Stained by Silver Salts

Question 20

Which part of the stomach has all cells

Answer 20

Fundus of the Stomach

All cells

Mucous neck cell
Argentaffin cell
Parietal cell
Chief cell

Question 21

Cells in the Fundus of gland

Answer 21

Chief cells

Argentaffin cells

Question 22

Basophilic cells which secrets pepsinogen

Answer 22

Chief Cells

Question 23

Cells present in Crypts of Liberkuhn of small Intestine

Answer 23

Stem Cells ~ Produce Enterocytes and Goblet Cells

Peneth Cells

M Cell

Question 24

Cells in Crypt of Liberkuhn migrate from the base towards apex

Answer 24

Enterocytes and Goblet Cells

Question 25

Cells in Crypt of Liberkuhn migrate from Apex towards the Base

Answer 25

Peneth Cells Contains Eosinophilic Granules in Apex (apical eosinophilia) Contain Lysosome Phagocytic in Function

Question 26

Antigen Presenting Cells in Crypt of Liberkuhn

Answer 26

M Cells

Question 27

Part of Duodenum has More No of Brunner’s Gland

Answer 27

Proximal Part of Duodenum submucosa ~ Has more no of Brunner’s gland ~ to neutralise the highly acidic incoming stomach content

Question 28

Mucous neck cells absent in small intestine Correct/Incorrect

Answer 28

Correct Instead Mucous Neck Cell it has Goblet Cells in small and large intestine

Question 29

Shape of hepatic lobule

Answer 29

Hexagonal Shape

Question 30

In the centre of hepatic lobule we have

Answer 30

Central Vein

Question 31

At the corner of Hepatic lobule we have

Answer 31

Portal Triad ~ consists of Portal Vein Hepatic Artery Bile Duct

Question 32

Blood from the Portal Vein and Hepatic Artery Drains into

Answer 32

Sinusoids ~ Central Vein ~ Hepatic Venules ~ Hepatic Vein ~ Inferior Vena Cava

Question 33

Kupffer cells present in the

Answer 33

Sinusoids

Question 34

Space between Endothelium of Sinusoids and Hepatocytes

Answer 34

Space of Disse (Peri-Sinusoidal Space) Exchange of metabolite and nutritive substance between liver and blood Has Stellate cells

Question 35

Stellate cells present in

Answer 35

Space of Disse

Question 36

PeriPortal space is called

Answer 36

Space of Mall

Question 37

Portal Lobule has

Answer 37

Central vein in Periphery Portal Vein in the Centre Triangular in shape Signifies the direction of bile flow (towards Portal Vein)

Question 38

Zone of Hepatic Acinus Closed to Portal Canal

Answer 38

Zone l ~ Highly Vascular

Question 39

What is Hepatic Acinus

Answer 39

Space between adjacent Hepatocytes supplied by Branches of Portal Vein and Hepatic Artery Diamond Shaped Has 3 Zones

Question 40

Zone Prone to Hypoxic Injury

Answer 40

Zone lll

Question 41

Shape of Hepatic Lobule ~ Portal Lobule ~ Hepatic Acinus ~

Answer 41

Hepatic Lobule ~ Hexagonal Portal Lobule ~ Triangular Hepatic Acinus ~ Diamond