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Regulation of Gastric Secretion Quiz

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Questions and Answers

What is the term used to describe the increase of HCO3− in blood leaving the stomach?

Acid-base balance

Gastric reflux

HCl formation

Alkaline tide (correct)

Which phase of gastric secretion involves the stimulation of parietal cells to release HCl?

Reflex phase

Cephalic phase

Gastric phase (correct)

Intestinal phase

What is the purpose of H+/K+ ATPase in the mechanism of HCl formation?

To pump H+ into the stomach lumen (correct)

To export HCO3− from the blood to the stomach

To facilitate the absorption of nutrients

To convert carbonic acid to H+ and HCO3−

What is the term used to describe the rhythmic contractions of the stomach muscles?

Peristaltic waves Signup and view all the answers

Which of the following is NOT a hormone involved in regulating gastric secretion?

Insulin Signup and view all the answers

What is the term used to describe the factors that slow down the emptying of the stomach?

Neural and hormonal factors Signup and view all the answers

Which nerve is primarily involved in the pharyngeal-esophageal phase of deglutition?

Vagus nerve Signup and view all the answers

What is the primary function of the stomach?

Temporary storage and chemical breakdown of protein digestion Signup and view all the answers

What type of epithelium is present in the mucosa layer of the stomach?

Simple columnar epithelium Signup and view all the answers

What is the function of parietal cells in the stomach?

Production of HCl and intrinsic factor Signup and view all the answers

What is the volume of the empty stomach?

50 ml Signup and view all the answers

What is the term for the folds in the stomach mucosa when empty?

Rugae Signup and view all the answers

What is the role of the vagus nerve in regulating gastric secretion?

Increases gastric juice secretion Signup and view all the answers

Which hormone stimulates HCl secretion by the stomach?

Gastrin Signup and view all the answers

What is the pH range of the stomach acid produced by parietal cells?

pH 1.5-3.5 Signup and view all the answers

What is the main function of pepsinogen?

To denature proteins Signup and view all the answers

What is the primary cause of most peptic ulcers?

Helicobacter pylori infection Signup and view all the answers

What is the approximate volume of gastric juice secreted by the stomach per day?

3 L Signup and view all the answers