Question 1

About the GIT hormones affecting gastric function:

Accepted Answer

A) CCK and Secretin Increase both gastric Secretion and motility. 
B) gastrin Secretion is Stimulated by the digestive products of fat. 
C) gastrin inhibits gastric Secretion and delay gastric emptying. 
D) GIP and VIP inhibit gastric Secretion. 
A) CCK and Secretin Increase both gastric Secretion and motility. 
B) gastrin Secretion is Stimulated by the digestive products of fat. 
C) gastrin inhibits gastric Secretion and delay gastric emptying. 
D) GIP and VIP inhibit gastric Secretion. D

Question 2

the Secretion of gastrin cease(stop):

Accepted Answer

A) When the stomach is distended by meal. 
B) When the PH of the gastric content is Decreased below 2. 
C) If the fundic mucosa is anaesthesiz 
A) When the stomach is distended by meal. 
B) When the PH of the gastric content is Decreased below 2. 
C) If the fundic mucosa is anaesthesiz B

Question 3

The major factor that Stimulates the release of Secretin into the blood stream is:

Accepted Answer

A) An acid PH of the chyme entering the duodenum. 
B) The para sympathetic StimulI. 
C) Peptones in the gastric chyme that enter the duodenum. 
D) A stomach full of digested contents. 
A) An acid PH of the chyme entering the duodenum. 
B) The para sympathetic StimulI. 
C) Peptones in the gastric chyme that enter the duodenum. 
D) A stomach full of digested contents. A

Question 4

Amajor part of the gall bladder contractions are due to:

Accepted Answer

A) sympathetic contraction OF the viscus. 
B) The overfilling of the gall bladder with bile. 
C) The rate of cholesterol synthesis and excretion by the liver. 
D) A hormone synthesized by duodenal mucosa . 
A) sympathetic contraction OF the viscus. 
B) The overfilling of the gall bladder with bile. 
C) The rate of cholesterol synthesis and excretion by the liver. 
D) A hormone synthesized by duodenal mucosa .

Question 5

The Secretin hormone:

Accepted Answer

A) Is secreted by the pancrease. 
B) Is released by the pyloric mucosa. 
C) Contracts the gall bladder wall. 
D) Increases the pancreatic Secretion of water and HCO3-. 
A) Is secreted by the pancrease. 
B) Is released by the pyloric mucosa. 
C) Contracts the gall bladder wall. 
D) Increases the pancreatic Secretion of water and HCO3-.

Question 6

It is known that secretin:

Accepted Answer

A) It is a large protein hormone synthesized by the pancreas,together with pancreozymin. 
B) Is a small polypeptide synthesized by the intestinal mucosa . 
C) Neutralizes directly the acid chyme that passes through the pylorus. 
D) Has an optimal activity at a PH equal to 8.4. 
A) It is a large protein hormone synthesized by the pancreas,together with pancreozymin. 
B) Is a small polypeptide synthesized by the intestinal mucosa . 
C) Neutralizes directly the acid chyme that passes through the pylorus. 
D) Has an optimal activity at a PH equal to 8.4.

Question 7

It is known that gastrin:

Accepted Answer

A) It is a large protein molecule ,somewhat similar in size to pepsin. 
B) Is not secreted by empty stomach when peristaltic movements may be quite forceful. 
C) Reaches the secretory cells of the fundus of the stomach through the blood and not through the lumen. 
D) Promotes the secretion of pepsin, but not that of HCL. 
A) It is a large protein molecule ,somewhat similar in size to pepsin. 
B) Is not secreted by empty stomach when peristaltic movements may be quite forceful. 
C) Reaches the secretory cells of the fundus of the stomach through the blood and not through the lumen. 
D) Promotes the secretion of pepsin, but not that of HCL.

Question 8

Man is unable to digest dietary:

Accepted Answer

A) GLYCOGEN. 
B) Dextrin. 
C) Saccharose. 
D) Cellulose. 
A) GLYCOGEN. 
B) Dextrin. 
C) Saccharose. 
D) Cellulose.

Question 9

About the GRP,all the followings are true except:

Accepted Answer

A) It inhibit the intestinal motility.(through librating gastrin). 
B) It increase the gastric secretion . .(through librating gastrin). 
C) It increase the pancreatic secretion . .(through librating gastrin). 
D) It is found in the hypothalamus.(in addition to GIT) 
A) It inhibit the intestinal motility.(through librating gastrin). 
B) It increase the gastric secretion . .(through librating gastrin). 
C) It increase the pancreatic secretion . .(through librating gastrin). 
D) It is found in the hypothalamus.(in addition to GIT)

Question 10

Secretin IS released by:

Accepted Answer

A) Acid in the duodenum. 
B) Acid in the urine. 
C) S cells in the duodenal mucosa. 
D) Distension of the colon. 
A) Acid in the duodenum. 
B) Acid in the urine. 
C) S cells in the duodenal mucosa. 
D) Distension of the colon.

Question 11

The presentation of a bolus of solid food to the mouth:

Accepted Answer

A) stimulates taste buds. 
B) Is usually followed by Mastication. 
C) Reflexively stimulates The salivary glands. 
D) All are correct. 
A) stimulates taste buds. 
B) Is usually followed by Mastication. 
C) Reflexively stimulates The salivary glands. 
D) All are correct.

Question 12

During the chewing of a bolus of food, but before Swallowing, salivary secretion ,gastric secretion and pancreatic secretion are stimulated by which the following?

Accepted Answer

A) Acetylecholine,gastrin,histamine. 
B) Acetylecholine,CCK,nitric oxide. 
C) Nitric oxide,VIP, histamine. 
D) VIP, gastrin,Somatostatin. 
A) Acetylecholine,gastrin,histamine. 
B) Acetylecholine,CCK,nitric oxide. 
C) Nitric oxide,VIP, histamine. 
D) VIP, gastrin,Somatostatin.

Question 13

The salivary amylase:

Accepted Answer

A) Is also called ptyalin and it is beta amylase. 
B) Is the only amylase in GIT. 
C) Digest mainly cooked starch. 
D) Is activated by either HCL or ca++ 
A) Is also called ptyalin and it is beta amylase. 
B) Is the only amylase in GIT. 
C) Digest mainly cooked starch. 
D) Is activated by either HCL or ca++

Question 14

Concerning the gastrin hormone:

Accepted Answer

A) It is Secreted at the pyloric antrum and reaches the fundus tohrough the gastric lumen. 
B) It Promotes the secretion of pepsin, but not HCL. 
C) Its Secretion Stimulated by secretin and GIP. 
D) It is structurally similar to CCK . 
A) It is Secreted at the pyloric antrum and reaches the fundus tohrough the gastric lumen. 
B) It Promotes the secretion of pepsin, but not HCL. 
C) Its Secretion Stimulated by secretin and GIP. 
D) It is structurally similar to CCK .

Question 15

I nhibition of the myenteric plexus leads to which of the following?

Accepted Answer

A) Increased Secretion of Secretin from the duodenum. 
B) Decreased gut motility. 
C) Hyperacidity in the stomach. 
D) Diarrhea. 
A) Increased Secretion of Secretin from the duodenum. 
B) Decreased gut motility. 
C) Hyperacidity in the stomach. 
D) Diarrhea.

Question 16

Thesalivary secretion:

Accepted Answer

A) Is rich in glucose. 
B) Is Produced by a nervous mechanism Only. 
C) digests starch to glucose. 
D) Has the largest volume relative to other digestive juices. 
A) Is rich in glucose. 
B) Is Produced by a nervous mechanism Only. 
C) digests starch to glucose. 
D) Has the largest volume relative to other digestive juices.

Question 17

The saliva ?

Accepted Answer

A) Contains no organic substances. 
B) Is markedly increase in amount after sympathetic stimulatation. 
C) secretion is increased after injection of atropine. 
D) secreted by submandibular glands is about 70%of the total secretion . 
A) Contains no organic substances. 
B) Is markedly increase in amount after sympathetic stimulatation. 
C) secretion is increased after injection of atropine. 
D) secreted by submandibular glands is about 70%of the total secretion .

Question 18

Cholecystokinin:

Accepted Answer

A) Release is Stimulated by protein hydrolysates in the lumen of the small intestine. 
B) Is released from gastric mucosal cells. 
C) Release is Stimulated by distension of the colon. 
D) A and C are correct. 
A) Release is Stimulated by protein hydrolysates in the lumen of the small intestine. 
B) Is released from gastric mucosal cells. 
C) Release is Stimulated by distension of the colon. 
D) A and C are correct.

Question 19

Stimulation of sub mucosal plexus result in an Increase in which of the following?

Accepted Answer

A) motility of the gut. 
B) Secretion of the gut. 
C) sphincter tone. 
D) stomach PH. 
A) motility of the gut. 
B) Secretion of the gut. 
C) sphincter tone. 
D) stomach PH.

Question 20

About the GIP,all the following are true except:

Accepted Answer

A) It is secreted from the duodenal mucosa. 
B) It has +ve feedback effect on gastric Secretion and motility. 
C) Its release is Stimulated by presence of excess fat. 
D) It inhibit both gastric Secretion and motility. 
A) It is secreted from the duodenal mucosa. 
B) It has +ve feedback effect on gastric Secretion and motility. 
C) Its release is Stimulated by presence of excess fat. 
D) It inhibit both gastric Secretion and motility.

About the GIT hormones affecting gastric function:

the Secretion of gastrin cease(stop):

The major factor that Stimulates the release of Secretin into the blood stream is:

Amajor part of the gall bladder contractions are due to:

The Secretin hormone:

It is known that secretin:

It is known that gastrin:

Man is unable to digest dietary:

About the GRP,all the followings are true except:

Secretin IS released by:

The presentation of a bolus of solid food to the mouth:

During the chewing of a bolus of food, but before Swallowing, salivary secretion ,gastric secretion and pancreatic secretion are stimulated by which the following?

The salivary amylase:

Concerning the gastrin hormone:

I nhibition of the myenteric plexus leads to which of the following?

Thesalivary secretion:

The saliva ?

Cholecystokinin:

Stimulation of sub mucosal plexus result in an Increase in which of the following?

About the GIP,all the following are true except:

Digestive Physiology

Gastric Secretion and Functioning of the Stomach

Gastric Secretion and Vomiting

Pancreatic and Liver Secretions and Functions

Digestive System: Bile Secretion, Gallbladder Functions, and Succus Entericus Absorption

Absorption and Motility in the Small Intestine

Digestive System Motility and Secretion

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Exam 1: Gastrointestinal Hormones and Functions

About the GIT hormones affecting gastric function:

the Secretion of gastrin cease(stop):

The major factor that Stimulates the release of Secretin into the blood stream is:

Amajor part of the gall bladder contractions are due to:

The Secretin hormone:

It is known that secretin:

It is known that gastrin:

Man is unable to digest dietary:

About the GRP,all the followings are true except:

Secretin IS released by:

The presentation of a bolus of solid food to the mouth:

During the chewing of a bolus of food, but before Swallowing, salivary secretion ,gastric secretion and pancreatic secretion are stimulated by which the following?

The salivary amylase:

Concerning the gastrin hormone:

I nhibition of the myenteric plexus leads to which of the following?

Thesalivary secretion:

The saliva ?

Cholecystokinin:

Stimulation of sub mucosal plexus result in an Increase in which of the following?

About the GIP,all the following are true except:

Digestive Physiology

Gastric Secretion and Functioning of the Stomach

Gastric Secretion and Vomiting

Pancreatic and Liver Secretions and Functions

Digestive System: Bile Secretion, Gallbladder Functions, and Succus Entericus Absorption

Absorption and Motility in the Small Intestine

Digestive System Motility and Secretion

Filters