Histo Digestive

Question 1

Name the layers of the alimentary canal from the lumen outward

Answer 1

Mucosa (Lining epithelium, Lamina propria, Muscularis mucosae)

Question 2

What composes the submucosa of the digestive system?

Answer 2

Dense irregular connective tissue (Meissner’s plexus)

Question 3

Describe the Muscularis externa layer of the digestive system

Answer 3

Smooth muscle tissue

Question 4

What type of tissue is found in the serosa/adventitia?

Answer 4

Loose (areolar) connective tissue

Question 5

How can you identify the esophagus histologically?

Answer 5

Nonkeratinized stratified squamous epithelium

Question 6

What is the most superior aspect of the stomach?

Answer 6

Fundus

Question 7

What is the most inferior aspect of the stomach?

Answer 7

Pylorus

Question 8

What is the entrance of the esophagus to the stomach?

Answer 8

Cardia

Question 9

What glands are associated with the cardia of the stomach?

Answer 9

Cardiac glands (primarily mucous)

Question 10

What glands are associated with the fundus/body of the stomach?

Answer 10

Gastric glands that secrete HCl and pepsin

Question 11

What glands are associated with the pylorus of the stomach?

Answer 11

Pyloric glands (primarily mucous)

Question 12

How can you identify the stomach histologically?

Answer 12

Mucosa - simple columnar epithelium with gastric pits leading to glands

Question 13

What are the circular folds found inside of the small intestine?

Answer 13

Plicae circulares

Question 14

How can you identify the small intestine histologically?

Answer 14

simple columnar epithelium mucosa.

Question 15

How can you identify the duodenum histologically?

Answer 15

Submucosa contains Brunner’s glands in the duodenum.

Question 16

How can you identify the ileum histologically?

Answer 16

Groups of lymphatic nodules (Peyer’s patches) are present

Question 17

What is the name of the bulges of the large intestine?

Answer 17

Haustra

Question 18

What is the name of the band of muscle in the large intestine?

Answer 18

Teniae coli

Question 19

What are the fat tags of the large intestine called?

Answer 19

Epiploic appendages

Question 20

How can you identify the large intestine histologically?

Answer 20

Simple columnar epithelium

Question 21

What is the pancrease’s function? (exocrine/endocrine)

Answer 21

98-99% exocrine

Question 22

Histologically, what cells are most common in the pancreas?

Answer 22

Pancreatic acini (exocrine)

Question 23

Histologically, what cells are the large groups of smaller cells?

Answer 23

Pancreatic islet (endocrine)

Question 24

What is the flow of blood through theliver?

Answer 24

Oxygenated blood from hepatic artery/nutrient right deoxygenated blood from hepatic portal vein