Question 1

A likely reason why a to and fro motion, such as that encountered during airplane flights or in an automobile ride over a bumpy road, tends to cause nausea and vomiting, is because during such motions:

Accepted Answer

A)  Much air is swallowed and the stomach becomes distended
B)  The stomach is more likely to develop reverse peristalsis
C)  The cerebral cortex can no longer inhibit an intrinsic tendency of the brainstem to cause vomiting
D)  Vestibular reflex eventually excite a chemoreceptor trigger zone in the medullaE) C) and D)
F) B) and D)

Question 2

Which of the following substances is released from the duodenal mucosa in response to acidic gastric juice?:

Accepted Answer

A)  CCK
B)  Substance P
C)  Secretin
D)  GIPE) C) and D)
F) A) and B)

Question 3

A 42years old salesman presents with the chief complaint of intermittent midepigastric pain that is relieved by antacids or eating. Gatric analysis reveals that basal and maximal acid output exceed normal values. The gastric hypersecretion can be explained by an increase in the plasma concentration of which of the following?:

Accepted Answer

A)  Somatostatin
B)  Histamine
C)  Gastrin
D)  SecretinE) A) and B)
F) A) and C)

Question 4

Concerning HCl secretion, all the following is true except:

Accepted Answer

A)  It's associated with increased PH of the gastric venous blood
B)  It's stimulated by gastrin, acetylcholine,histamine and norepinephiren
C)  The energy required is derived from ATP breakdown
D)  It involves formation of carbonic acidE) All of the above
F) A) and B)

Question 5

All the following statements are true except:

Accepted Answer

A)  VIP stimulates intestinal secretion and inhibits gastric acid secretions
B)  Diamox (a carbonic anhydrase inhibitor)  increases both gastric HCL formation and the HCO?? content in the pancreatic juice
C)  Both gastrin and glucagons are secreted from the pyloric antrum and duodenum
D)  Gastrin is secreted from almost the whole GIT mucosaE) B) and C)
F) C) and D)

Exam 4: Gastric Secretion and Vomiting

Concerning HCl secretion, all the following is true except:

Correct Answer
verified

Correct Answer
verified

A likely reason why a to and fro motion, such as that encountered during airplane flights or in an automobile ride over a bumpy road, tends to cause nausea and vomiting, is because during such motions:

Correct Answer
verified

All the following statements are true except:

Correct Answer
verified

Which of the following substances is released from the duodenal mucosa in response to acidic gastric juice?:

Correct Answer
verified

Exam 4: Gastric Secretion and Vomiting

Concerning HCl secretion, all the following is true except:

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A likely reason why a to and fro motion, such as that encountered during airplane flights or in an automobile ride over a bumpy road, tends to cause nausea and vomiting, is because during such motions:

Correct AnswerverifiedShow Answer

All the following statements are true except:

Correct AnswerverifiedShow Answer

Which of the following substances is released from the duodenal mucosa in response to acidic gastric juice?:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified