Question 1

A patient with pernicious anemia has vitamin B₁₂ deficiency. The reason for the deficiency is lack of gastric intrinsic factor (GIF). The cell that secretes GIF is

Accepted Answer

Pernicious anemia is caused by a deficiency in gastric intrinsic factor (GIF), which is secreted by parietal cells in the stomach. Therefore, the best choice is option D. Surface lining cells and mucous neck cells secrete mucus that protects the lining of the stomach, goblet cells secrete mucus in the intestines, and chief cells secrete pepsinogen.

Question 2

Ulcers are caused primarily by bacteria of the genus

Accepted Answer

Ulcers are primarily caused by Helicobacter pylori bacteria, which are able to survive in the acidic environment of the stomach and cause inflammation and damage to the lining of the stomach or small intestine. Streptobacillus, Staphylococcus, Escherichia, and Campylobacter are not known to be primary causes of ulcers.

Question 3

Paneth cells

Accepted Answer

Paneth cells are found in the small intestine and secrete lysozymes, which are enzymes that help to break down bacterial cell walls.

Question 4

Long-chain fatty acids are

Accepted Answer

Long-chain fatty acids are emulsified in the lumen of the duodenum by bile before they can be absorbed in the small intestine.

Question 5

The tip of the arrow indicates the junction of the

Accepted Answer

The answer of The tip of the arrow indicates the...

Question 6

A patient who has appendicitis does not have which one of the following symptoms?

Accepted Answer

A patient with appendicitis typically experiences pain in the lower right quadrant of the abdomen, nausea, vomiting, fever, and an elevated white blood cell count. Lymphocytopenia, which is a deficiency of lymphocytes (a type of white blood cell), is not typically associated with appendicitis.

Question 7

The parietal cells of the fundic stomach

Accepted Answer

Parietal cells of the fundic stomach require histamine to manufacture HCl.

Question 8

An old patient has a low-grade fever, copious, severe abdominal cramps, and a copious watery diarrhea. The physician believes his condition to be pseudomembranous colitis, an infection caused by bacteria of the genus

Accepted Answer

Pseudomembranous colitis is primarily caused by Clostridium difficile, which can overgrow in the gut when normal gut flora are disrupted, leading to severe abdominal symptoms and diarrhea. Streptobacillus, Staphylococcus, Escherichia, and Campylobacter are not typically associated with pseudomembranous colitis.

Question 9

Which of the following cells is present in the mucosa of the stomach and manufactures visible mucus?

Accepted Answer

Surface lining cells in the stomach are responsible for producing visible mucus that coats the stomach lining, protecting it from the acidic environment.

Question 10

A patient has Barrett syndrome. The physician should be examining his

Accepted Answer

Barrett syndrome is a condition in which the lining of the esophagus is damaged by stomach acid and is replaced by tissue similar to that which lines the stomach. Therefore, the physician should be examining his esophagus.

Question 11

The ileum is easily recognizable because

Accepted Answer

The ileum is easily recognizable because it has Peyer patches, which are clusters of lymphoid tissue found in the submucosa of the small intestine.

Question 12

In Fig. Img_005a, a patient presents with an ulcer.This photomicrograph shows a healthy area of the ulcerated organ. Where is this patient's ulcer located?

Accepted Answer

This photomicrograph shows the villi and crypts of Lieberkühn, which are characteristic structures of the small intestine. Therefore, the patient's ulcer is likely located in the duodenum.

Quiz 16: Digestive System: Alimentary Canal

A patient with pernicious anemia has vitamin B₁₂ deficiency. The reason for the deficiency is lack of gastric intrinsic factor (GIF) . The cell that secretes GIF is

Ulcers are caused primarily by bacteria of the genus

Paneth cells

Long-chain fatty acids are

The tip of the arrow indicates the junction of the

A patient who has appendicitis does not have which one of the following symptoms?

The parietal cells of the fundic stomach

An old patient has a low-grade fever, copious, severe abdominal cramps, and a copious watery diarrhea. The physician believes his condition to be pseudomembranous colitis, an infection caused by bacteria of the genus

Which of the following cells is present in the mucosa of the stomach and manufactures visible mucus?

A patient has Barrett syndrome. The physician should be examining his

The ileum is easily recognizable because

In Fig. Img_005a, a patient presents with an ulcer.This photomicrograph shows a healthy area of the ulcerated organ. Where is this patient's ulcer located?

Quiz 16: Digestive System: Alimentary Canal

A patient with pernicious anemia has vitamin B12 deficiency. The reason for the deficiency is lack of gastric intrinsic factor (GIF) . The cell that secretes GIF is

Ulcers are caused primarily by bacteria of the genus

Paneth cells

Long-chain fatty acids are

The tip of the arrow indicates the junction of the

A patient who has appendicitis does not have which one of the following symptoms?

The parietal cells of the fundic stomach

An old patient has a low-grade fever, copious, severe abdominal cramps, and a copious watery diarrhea. The physician believes his condition to be pseudomembranous colitis, an infection caused by bacteria of the genus

Which of the following cells is present in the mucosa of the stomach and manufactures visible mucus?

A patient has Barrett syndrome. The physician should be examining his

The ileum is easily recognizable because

In Fig. Img_005a, a patient presents with an ulcer.This photomicrograph shows a healthy area of the ulcerated organ. Where is this patient's ulcer located?

A patient with pernicious anemia has vitamin B₁₂ deficiency. The reason for the deficiency is lack of gastric intrinsic factor (GIF) . The cell that secretes GIF is