Digestive System Practice - Assignment #13

Question 1

Which selection includes only accessory digestive organs?

Question 1 options:

salivary glands, thyroid gland, pancreas, liver

stomach, duodenum, pancreas, gallbladder

gallbladder, liver, pancreas, salivary glands

liver, thyroid gland, gallbladder, spleen

Question 2 (0.25 points)

Answer 1

gallbladder, liver, pancreas, salivary glands

Question 2

Which sequence below represents the correct layering of the wall of the GI tract, starting from the layer next to the lumen?

Question 2 options:

Mucosa, muscularis externa, submucosa, serosa

Muscularis externa, serosa, submucosa, mucosa

Mucosa, submucosa, muscularis externa, serosa

Submucosa, mucosa, muscularis externa, serosa

Answer 2

Mucosa, submucosa, muscularis externa, serosa

Question 3

During deglutition, the bolus passes into the stomach from the esophagus through the __________.

Question 3 options:

pyloric sphincter

ileocecal valve

esophageal sphincter

gastroesophageal sphincter

Answer 3

gastroesophageal sphincter

Question 4

During the intestinal phase of gastric regulation, __________.

Question 4 options:

the enterogastric reflex is turned off

the stomach is initially stimulated and later inhibited

secretin causes more HCl release

hormones reduce chief cell activity

Answer 4

the stomach is initially stimulated and later inhibited

Question 5

What intestinal structure(s) consist(s) of protective aggregated nodules of lymphocytes and macrophages?

Question 5 options:

the intestinal crypts

the gastric pits

Peyer’s patches

the muscularis mucosae

Answer 5

Peyer’s patches

Question 6

What are the main organic molecules digested in the stomach?

Question 6 options:

proteins

nucleic acids

carbohydrates

fats

Answer 6

proteins

Question 7

The main propulsive force that occurs in the majority of the alimentary canal is called __________.

Question 7 options:

segmentation

peristalsis

ingestion

motility

Answer 7

peristalsis

Question 8

Which regulatory chemical stimulates gastric gland activity and motility?

Question 8 options:

secretin

gastrin

CCK

histamine

Answer 8

gastrin

Question 9

Match the following term with its correct description: Same structure as the visceral peritoneum.

Question 9 options:

Serosa

Submucosa

Muscularis

mucosa

Answer 9

Question 9 options:

Serosa

Question 10

What substances from different organs would mix together at the hepatopancreatic ampulla?

Question 10 options:

brush border enzymes and intrinsic factor

bile and pancreatic enzymes

HCl and pepsin

secretin and CCK

Answer 10

bile and pancreatic enzymes

Question 11

Which of the following products does the stomach produce?

Question 11 options:

HCl and intrinsic factor

pepsinogen and secretin

bile and trypsin

mucus and amylase

Answer 11

HCl and intrinsic factor

Question 12

1. Which of the following cells produce HCl?
2. Which of the following cells produce pepsinogen?
3. The short reflexes in the digestive system are stimulated by __________.
4. The only stomach function that is essential to life is __________.
5. Main site of nutrient absorption
6. Responsible for segmentation and peristalsis

Answer 12

1parietal cells

4
the secretion of intrinsic factor

3
the enteric nerve plexuses

5
mucosa

2
chief Cells

6
Muscularis external
.

Question 13

Emulsification of which organic molecules would be most affected if the liver were severely damaged?

Question 13 options:

carbohydrates

proteins

lipids

nucleic acids

Answer 13

lipids

Question 14

Which of the following statements about the mesentery is INCORRECT?

Question 14 options:

It is composed of a layer of serous membrane fused with a layer of mucous membrane.

Omenta is the special name for part of the mesentery extending from the curvatures of the stomach.

It provides a route for blood vessels, lymphatics, and nerves to reach the digestive viscera.

It holds the organs of the abdomen in place.

Answer 14

It is composed of a layer of serous membrane fused with a layer of mucous membrane.

Question 15

Some aspects of the __________ phase of gastric secretion, which occur before food enters the stomach, may be considered conditioned reflexes.

Question 15 options:

cephalic

gastric

esophageal

intestinal

Answer 15

Question 15 options:

cephalic

Question 16

The myenteric nerve plexus is located in which tunic of the alimentary canal?

Question 16 options:

submucosa

mucosa

serosa

muscularis externa

Answer 16

muscularis externa

Question 17

Which of the following is a function of the gallbladder?

Question 17 options:

metabolizing carbohydrate

converting pepsinogen to pepsin

storing and concentrating bile

secreting pancreatic juice

Answer 17

storing and concentrating bile

Question 18

he three pairs of multicellular salivary glands that secrete into the oral cavity are the ____________ glands.

Question 18 options:

parotid, submandibular, and sublingual

palatine, lingual, and pharyngeal

serous, mucous, and mixed

serous, sublingual, parotid

Question 19 (0.5 points)

Answer 18

Question 18 options:

parotid, submandibular, and sublingual

Question 19

In which of the following selections are the GI tract organs or regions correctly matched with the type of epithelium that lines them?

Question 19 options:

oral cavity and esophagus; stratified cuboida

stomach and small intestine; stratified squamous

cecum, colon, and stomach; simple columnar

Answer 19

cecum, colon, and stomach; simple columnar

Question 20

What are the three phases of the swallowing process?

Question 20 options:

oral, cranial, and pharyngeal

voluntary, pharyngeal, and esophageal

cardiac, gastric, and pyloric

mastication, eruption, and dentition

Answer 20

voluntary, pharyngeal, and esophageal

Question 21

Which list proceeds from the superior to the inferior end of the stomach?

Question 21 options:

pylorus, fundus, cardia, body

cardia, body, fundus, pylorus

cardia, fundus, body, pylorus

body, cardia, pylorus, fundus

Answer 21

cardia, fundus, body, pylorus

Question 22

1. Inhibits gastric gland secretions and stimulates the release of bicarbonate-rich pancreatic juice
2. Stimulated by partially digested proteins in the stomach and increases gastric gland secretions
3. Increases the secretions of enzyme-rich pancreatic juice
4. activates parietal cells to release HCL
5. Inhibits gastric secretions, secretin, contraction, and bile release

Answer 22

Question 22 options:

3
CCK

4
Histamine

5
Somatostatin

1
Secretin

2
Gastrin