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?

<p>Peristaltic waves (B)</p> Signup and view all the answers

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

<p>Insulin (C)</p> Signup and view all the answers

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

<p>Neural and hormonal factors (A)</p> Signup and view all the answers

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

<p>Vagus nerve (D)</p> Signup and view all the answers

What is the primary function of the stomach?

<p>Temporary storage and chemical breakdown of protein digestion (A)</p> Signup and view all the answers

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

<p>Simple columnar epithelium (B)</p> Signup and view all the answers

What is the function of parietal cells in the stomach?

<p>Production of HCl and intrinsic factor (A)</p> Signup and view all the answers

What is the volume of the empty stomach?

<p>50 ml (D)</p> Signup and view all the answers

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

<p>Rugae (D)</p> Signup and view all the answers

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

<p>Increases gastric juice secretion (A)</p> Signup and view all the answers

Which hormone stimulates HCl secretion by the stomach?

<p>Gastrin (D)</p> Signup and view all the answers

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

<p>pH 1.5-3.5 (D)</p> Signup and view all the answers

What is the main function of pepsinogen?

<p>To denature proteins (A)</p> Signup and view all the answers

What is the primary cause of most peptic ulcers?

<p>Helicobacter pylori infection (D)</p> Signup and view all the answers

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

<p>3 L (B)</p> Signup and view all the answers

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