Digestive System - Module 13

Question 1

This system is responsible for digestion and absorption of nutrients, and excretion of waste products as feces

Answer 1

Digestive System

Question 2

6 major organs of Digestive Tract

Answer 2

Mouth > Esophagus > Stomach > Small Intestine > Large Intestine > Anus

Question 3

Histological Layer of Digestive System

Answer 3

1. Mucosa
2. Submucosa
3. Muscularis
4. Serosa

Question 4

Layers of Mucosa

Answer 4

Epithelium, Lamina propria, muscularis mucosae

Question 5

Layers of Submucosa

Answer 5

Submucosal Plexus (Meissner’s Plexus)

Question 6

Layers of Muscularis

Answer 6

Myenteric Plexus (Auerbach’s Plexus)

Question 7

True or False

Auerbach’s Plexus : Myenteric Plexus
Meissner’s Plexus : Submucosal Plexus

Answer 7

True

Question 8

Histology of Mouth’s Mucosa

Answer 8

Non-keratinized Stratified Squamous Epithelium

Question 9

Histology of Pharynx’s Mucosa

Answer 9

Non-keratinized Stratified Squamous Epithelium

Question 10

Histology of Esophagus’ Mucosa

Answer 10

Non-keratinized Stratified Squamous Epithelium

Question 11

Histology of Stomach’s Mucosa

Answer 11

Simple Columnar Epithelium

Question 12

Histology of Small Intestine’s Mucosa

Answer 12

Simple Columnar Epithelium

Question 13

Histology of Large Intestine’s Mucosa

Answer 13

Simple Columnar Epithelium

Question 14

Histology of Anus’ Mucosa

Answer 14

Non-keratinized Stratified Squamous Epithelium

Question 15

Histology of Esophagus’ Submucosa

Answer 15

Submucosal Mucous Glands

Question 16

Histology of Duodenum’s Submucosa

Answer 16

Brunner’s Glands

Question 17

Histology of Ileum’s Submucosa

Answer 17

Peyer’s Patches

Question 18

Histology of Esophagus’ Muscularis

Answer 18

2 smooth muscle layers; circular and longitudinal

Question 19

Histology of the Stomach’s Muscularis

Answer 19

3 smooth muscle layers; Oblique, Circular, Longitudinal

Question 20

Histology of Esophagus’ Serosa

Answer 20

Adventitia

Question 21

Histology of Stomach’s Serosa

Answer 21

Visceral Peritoneum

Question 22

What tissue makes up the adventitia of the esophagus

Answer 22

Loose Areolar Connective Tissue

Question 23

Division of Stomach’s Histological regions

Answer 23

1. Cardiac Region
2. Fundic Region
3. Pyloric Region

Question 24

Cells found in the fundic region

Answer 24

1. Mucous Neck Cells
2. Parietal (Oxyntic) Cells
3. Chief (peptic/zymogen)Cells
4. Enteroendocrine Cells
5. Undifferentiated Cells

Question 25

True or False, Submucosal layer of stomach (fundic region) contains blood vessels, lymphatics, and Meissner’s Plexus

Answer 25

True

Question 26

Mucosal Characteristics of this organ are:
1. Villi & Microvilli
2. Plicae circularis
3. few goblet cells
4. Crypts of Lieberkuhn

Answer 26

Small Intestine

Question 27

What segment of intestine has the presence of Brunner’s Glands in its submucosa

Answer 27

Duodenum

Question 28

True or False, Brunner’s Glands is also present in Jejunum

Answer 28

False, it is absent in Jejunum

Question 29

This segment of Small intestine has the presence of Lymphoid organs called ________

Answer 29

Ileum, Peyer’s Patches

Question 30

This organ has no Plicae circularis and villi, but has microvilli and large number of Goblet Cells

Answer 30

Large Intestine

Question 31

True or False, Crypts of Lieberkuhn is present in Large Intestine

Answer 31

True

Question 32

This is a small blind-ending diverticulum with large accumulations of lymphoid tissues in lamina propria

Answer 32

Vermiform Appendix

Question 33

This gland lacks taenia and appendices of epiploicae, and a continuous coat of longitudinal muscle is present

Answer 33

Rectum

Question 34

What epithelium lines the Anal Canal

Answer 34

Upper Part: Simple Columnar Epithelium

Middle Part: Non-keratinized Stratified Squamous Epithelium

Lower Part: Covered by true skin

Question 35

Is the submucosal fold between anal columns

Answer 35

Pectinate Line

Question 36

True or False, Muscularis externa circular muscle forms voluntary internal anal sphincter

Answer 36

False, it forms involuntary internal anal sphincter