Question 1

Gastric emptying:

Accepted Answer

A) Is normally completed about 9 hours after ingestion of a usual meal. 
B) Is slowest if the food is soft and rich in carbohydrates. 
C) Is inhibited by excessive acidity in the duodenum. 
D) Is accelerated by presences of fat or hypertonic solutions in the duodenum. 
A) Is normally completed about 9 hours after ingestion of a usual meal. 
B) Is slowest if the food is soft and rich in carbohydrates. 
C) Is inhibited by excessive acidity in the duodenum. 
D) Is accelerated by presences of fat or hypertonic solutions in the duodenum. C

Question 2

HCL secretion in the stomach:

Accepted Answer

A) Is a function of peptic cells. 
B) Require no energy. 
C) Occurs by passive diffusion of both H+ and CLin the gastric human. 
D) Require presence of carbonic anhydrase enzyme. 
A) Is a function of peptic cells. 
B) Require no energy. 
C) Occurs by passive diffusion of both H+ and CLin the gastric human. 
D) Require presence of carbonic anhydrase enzyme. D

Question 3

In contrast to Secondary esophageal peristalsis,primary esophageal peristalsis characterized by which of the following statements?

Accepted Answer

A) It does not involve relaxation of The lower esophageal sphincter. 
B) It involves only contraction of esophageal smooth muscle. 
C) It is not influenced by intrinsic nervous system. 
D) It has an oropharyngeal phase. 
A) It does not involve relaxation of The lower esophageal sphincter. 
B) It involves only contraction of esophageal smooth muscle. 
C) It is not influenced by intrinsic nervous system. 
D) It has an oropharyngeal phase. D

Question 4

Secondary esophageal peristalsis:

Accepted Answer

A) Is preceded by an oral- pharyngeal phase of Swallowing . 
B) Involves activation of medullary Swallowing centers . 
C) Is accompanied by lower esophageal sphincter relaxation. 
D) Occurs in both skeletal and smooth muscle portions of the esophagus. 
A) Is preceded by an oral- pharyngeal phase of Swallowing . 
B) Involves activation of medullary Swallowing centers . 
C) Is accompanied by lower esophageal sphincter relaxation. 
D) Occurs in both skeletal and smooth muscle portions of the esophagus.

Question 5

The salivary secretion:

Accepted Answer

A) Is stimulated by most GIT hormones specially gastrin. 
B) I s essential for complete digestion of starch. 
C) Increases more by sweet than by bitter substances. 
D) Markedly Increases by parasympathetic stimulatation. 
A) Is stimulated by most GIT hormones specially gastrin. 
B) I s essential for complete digestion of starch. 
C) Increases more by sweet than by bitter substances. 
D) Markedly Increases by parasympathetic stimulatation.

Question 6

The salivary secretion ?

Accepted Answer

A) Has a serous component. 
B) Has a mucous component. 
C) A and B are correct. 
D) It is largely under hormonal control. 
A) Has a serous component. 
B) Has a mucous component. 
C) A and B are correct. 
D) It is largely under hormonal control.

Question 7

Vitamin B12 absorption :

Accepted Answer

A) Depends on presence of intrinsic factor. 
B) Depends on passive diffusion. 
C) Occurs in the jujenum. 
D) Occurs in the stomach. 
A) Depends on presence of intrinsic factor. 
B) Depends on passive diffusion. 
C) Occurs in the jujenum. 
D) Occurs in the stomach.

Question 8

during which stage of Swallowing is respiration inhibited?

Accepted Answer

A) Voluntary stage. 
B) pharyngeal stage. 
C) Esophageal stage. 
D) Postprandial stage. 
A) Voluntary stage. 
B) pharyngeal stage. 
C) Esophageal stage. 
D) Postprandial stage.

Question 9

Salivation can become a conditioned reflex .This suggests that:

Accepted Answer

A) Pleasant taste sensation are not related to the reflex . 
B) Only salivatory nuclei in the brainstem need to be excited by taste sensation without participation of suprasegmental influences. 
C) The cerebral cortex partially controls salivation. 
D) salivation could be completely interrupted in a decorticate animal whose tongue is mechanically stimulated. 
A) Pleasant taste sensation are not related to the reflex . 
B) Only salivatory nuclei in the brainstem need to be excited by taste sensation without participation of suprasegmental influences. 
C) The cerebral cortex partially controls salivation. 
D) salivation could be completely interrupted in a decorticate animal whose tongue is mechanically stimulated.

Question 10

The pangs associated with hunger :

Accepted Answer

A) Are decreased a low level of blood sugar. 
B) Are accompanied with feeling of hunger and pain in the pit of the stomach. 
C) Usually appear 3 to 4 hour after fasting begins. 
D) diminish after 1 to 2 days of starvation. 
A) Are decreased a low level of blood sugar. 
B) Are accompanied with feeling of hunger and pain in the pit of the stomach. 
C) Usually appear 3 to 4 hour after fasting begins. 
D) diminish after 1 to 2 days of starvation.

Question 11

The pharyngeal phase of Swallowing:

Accepted Answer

A) Can be voluntairly inhibited. 
B) Involves closure of larynx by the vocal cord. 
C) Is associated with lowering of the soft palate. 
D) Is accompanied by deep inspiration. 
A) Can be voluntairly inhibited. 
B) Involves closure of larynx by the vocal cord. 
C) Is associated with lowering of the soft palate. 
D) Is accompanied by deep inspiration.

Question 12

which of the following statements about salivary secretion is untrue?

Accepted Answer

A)  saliva has constant composition regardless the rate of secretion. 
B) The submandibular glands secrets about 70%of the total secretion . 
C) The buccal phase of salivary secretion is due to unconditioned reflex. 
D) none 
A)  saliva has constant composition regardless the rate of secretion. 
B) The submandibular glands secrets about 70%of the total secretion . 
C) The buccal phase of salivary secretion is due to unconditioned reflex. 
D) none

Question 13

Deglutition (Swallowing):

Accepted Answer

A) Is a complicated act requiring the precise coordination of many muscle group. 
B) Is an automatic function of smooth muscle. 
C) Is associated with a lowering of hard palate to prevent reflux of food into the nasopharynx. 
D) Does not require relaxation of cricopharyngeal muscle. 
A) Is a complicated act requiring the precise coordination of many muscle group. 
B) Is an automatic function of smooth muscle. 
C) Is associated with a lowering of hard palate to prevent reflux of food into the nasopharynx. 
D) Does not require relaxation of cricopharyngeal muscle.

Question 14

The act of Swallowing is associated with:

Accepted Answer

A) Concurrent inhibition of respiration. 
B) Opening of the glottis. 
C) Movement of food into the nasopharynx. 
D) upper esophageal sphincter constriction when food placed in contact with the anterior pillars of the pharynx. 
A) Concurrent inhibition of respiration. 
B) Opening of the glottis. 
C) Movement of food into the nasopharynx. 
D) upper esophageal sphincter constriction when food placed in contact with the anterior pillars of the pharynx.

Question 15

Ingesting antacids with and after a meal so that PH doesn`t decrease below 6 will cause a greater than normal secretion of:

Accepted Answer

A) Gastrin. 
B) Secretin. 
C) Pancreatic bicarbonate. 
D) CCK. 
A) Gastrin. 
B) Secretin. 
C) Pancreatic bicarbonate. 
D) CCK.

Question 16

Chronic gastritis is often associated with which of the following :

Accepted Answer

A) Microcytic anemia. 
B) Hyperchlorohydria. 
C) Steatorrhea. 
D) pernicious anemia. 
A) Microcytic anemia. 
B) Hyperchlorohydria. 
C) Steatorrhea. 
D) pernicious anemia.

Question 17

Select a single incorrect answer about Swallowing:

Accepted Answer

A) Reflex apnea occurs during the pharyngeal phase. 
B) the buccal phase of swallowing is voluntary. 
C) Food is prevented from entering the nose during swallowing by elevation of epiglottis. 
D) none 
A) Reflex apnea occurs during the pharyngeal phase. 
B) the buccal phase of swallowing is voluntary. 
C) Food is prevented from entering the nose during swallowing by elevation of epiglottis. 
D) none

Question 18

The musculature of the esophagus below the pharynx is:

Accepted Answer

A) Smooth only. 
B) Mainly striated. 
C) Incapable of peristalsis in absence of impulses from the Swallowing center. 
D) Primarily innervated by spinal nerves. 
A) Smooth only. 
B) Mainly striated. 
C) Incapable of peristalsis in absence of impulses from the Swallowing center. 
D) Primarily innervated by spinal nerves.

Question 19

Acidification of the duodenum will:

Accepted Answer

A) Decrease pancreatic secretion of bicarbonate. 
B) Increase secretion of gastric acid. 
C) Decrease gastric emptying. 
D) Increase contraction of the gall bladder. 
A) Decrease pancreatic secretion of bicarbonate. 
B) Increase secretion of gastric acid. 
C) Decrease gastric emptying. 
D) Increase contraction of the gall bladder.

Question 20

Esophageal peristalsis:

Accepted Answer

A) Is stimulated by A.CH. 
B) Is initiated by vagal reflexs. 
C) Can be caused by distension of the esophagus. 
D) All are correct. 
A) Is stimulated by A.CH. 
B) Is initiated by vagal reflexs. 
C) Can be caused by distension of the esophagus. 
D) All are correct.

Gastric emptying:

HCL secretion in the stomach:

In contrast to Secondary esophageal peristalsis,primary esophageal peristalsis characterized by which of the following statements?

Secondary esophageal peristalsis:

The salivary secretion:

The salivary secretion ?

Vitamin B12 absorption :

during which stage of Swallowing is respiration inhibited?

Salivation can become a conditioned reflex .This suggests that:

The pangs associated with hunger :

The pharyngeal phase of Swallowing:

which of the following statements about salivary secretion is untrue?

Deglutition (Swallowing):

The act of Swallowing is associated with:

Ingesting antacids with and after a meal so that PH doesn`t decrease below 6 will cause a greater than normal secretion of:

Chronic gastritis is often associated with which of the following :

Select a single incorrect answer about Swallowing:

The musculature of the esophagus below the pharynx is:

Acidification of the duodenum will:

Esophageal peristalsis:

Gastrointestinal Hormones and Functions

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

Exam 2: Digestive Physiology

Gastric emptying:

HCL secretion in the stomach:

In contrast to Secondary esophageal peristalsis,primary esophageal peristalsis characterized by which of the following statements?

Secondary esophageal peristalsis:

The salivary secretion:

The salivary secretion ?

Vitamin B12 absorption :

during which stage of Swallowing is respiration inhibited?

Salivation can become a conditioned reflex .This suggests that:

The pangs associated with hunger :

The pharyngeal phase of Swallowing:

which of the following statements about salivary secretion is untrue?

Deglutition (Swallowing):

The act of Swallowing is associated with:

Ingesting antacids with and after a meal so that PH doesn`t decrease below 6 will cause a greater than normal secretion of:

Chronic gastritis is often associated with which of the following :

Select a single incorrect answer about Swallowing:

The musculature of the esophagus below the pharynx is:

Acidification of the duodenum will:

Esophageal peristalsis:

Gastrointestinal Hormones and Functions

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