Question 1

Arrange the following events in the correct order: (1) absorption of lipids
(2) emulsification
(3) micelle formation
(4) digestion of lipids

Accepted Answer

A)  1, 2, 3, 4 
B)  3, 4, 2, 1 
C)  4, 1, 2, 3 
D)  2, 4, 1, 3 
E)  2, 4, 3, 1 
A)  1, 2, 3, 4 
B)  3, 4, 2, 1 
C)  4, 1, 2, 3 
D)  2, 4, 1, 3 
E)  2, 4, 3, 1

Question 2

Match the enzyme with the products of its digestive activity.
-salivary amylase

Accepted Answer

A) glucose and galactose 
B) amino acids 
C) fatty acids and glycerol 
D) maltose and isomaltose 
E) polysaccharides and disaccharides 
A) glucose and galactose 
B) amino acids 
C) fatty acids and glycerol 
D) maltose and isomaltose 
E) polysaccharides and disaccharides

Question 3

Enterokinase

Accepted Answer

A)  is a hormone. 
B)  triggers the release of bile from the gallbladder. 
C)  activates trypsinogen. 
D)  increases duodenal motility. 
E)  digests proteins. 
A)  is a hormone. 
B)  triggers the release of bile from the gallbladder. 
C)  activates trypsinogen. 
D)  increases duodenal motility. 
E)  digests proteins.

Question 4

Match the enzyme or hormone with the organ that produces it.
-trypsin

Accepted Answer

A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas 
A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas

Question 5

Blockage of the ileocecal valve would prevent

Accepted Answer

A)  pancreatic juice from entering the duodenum. 
B)  bile from entering the duodenum. 
C)  lymph from entering the jejunum. 
D)  chyme from entering the ileum. 
E)  chyme from entering the large intestine. 
A)  pancreatic juice from entering the duodenum. 
B)  bile from entering the duodenum. 
C)  lymph from entering the jejunum. 
D)  chyme from entering the ileum. 
E)  chyme from entering the large intestine.

Question 6

Match the enzyme or hormone with the organ that produces it.
-lactase

Accepted Answer

A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas 
A) salivary glands 
B) stomach 
C) liver 
D) small intestine 
E) pancreas

Question 7

Which of the following is NOT a necessary function of the tongue?

Accepted Answer

A)  swallowing 
B)  chewing 
C)  taste 
D)  speech 
A)  swallowing 
B)  chewing 
C)  taste 
D)  speech

Question 8

Which of the following is true?

Accepted Answer

A)  Peptidases are made in the large intestine. 
B)  Intestinal epithelial cells absorb more dipeptides and tripeptides than single amino acids. 
C)  The hepatic artery transports amino acids from the small intestine to the liver. 
D)  Amino acids leave intestinal epithelial cells and enter the lacteals. 
E)  Protein digestion starts in the duodenum. 
A)  Peptidases are made in the large intestine. 
B)  Intestinal epithelial cells absorb more dipeptides and tripeptides than single amino acids. 
C)  The hepatic artery transports amino acids from the small intestine to the liver. 
D)  Amino acids leave intestinal epithelial cells and enter the lacteals. 
E)  Protein digestion starts in the duodenum.

Question 9

How are ions such as sodium, potassium, calcium, magnesium, and phosphate transported from the intestinal lumen?

Accepted Answer

A)  passive transport 
B)  osmosis 
C)  diffusion 
D)  active transport 
A)  passive transport 
B)  osmosis 
C)  diffusion 
D)  active transport

Question 10

The defecation reflex

Accepted Answer

A)  is stimulated by distention of the rectum. 
B)  inhibits further peristalsis in the rectum and lower colon. 
C)  constricts the internal anal sphincter. 
D)  lasts several hours. 
E)  None of these choices is correct. 
A)  is stimulated by distention of the rectum. 
B)  inhibits further peristalsis in the rectum and lower colon. 
C)  constricts the internal anal sphincter. 
D)  lasts several hours. 
E)  None of these choices is correct.

Question 11

Which of the following occurs in the large intestine?

Accepted Answer

A)  chemical digestion 
B)  mass movements 
C)  mastication 
D)  mixing waves 
E)  neutralization 
A)  chemical digestion 
B)  mass movements 
C)  mastication 
D)  mixing waves 
E)  neutralization

Question 12

If the thoracic duct were tied off, which of the following classes of nutrients would not enter the circulatory system at their normal rate?

Accepted Answer

A)  amino acids 
B)  glucose 
C)  lipids 
D)  disaccharides 
E)  monosaccharides 
A)  amino acids 
B)  glucose 
C)  lipids 
D)  disaccharides 
E)  monosaccharides

Question 13

What disease is caused by the absence of enteric neurons in the distal large intestine?

Accepted Answer

A)  Hirschprung disease 
B)  multiple endocrine neoplasia type 2 
C)  spastic colon 
D)  gastroenteritis 
A)  Hirschprung disease 
B)  multiple endocrine neoplasia type 2 
C)  spastic colon 
D)  gastroenteritis

Question 14

The _____________ phase of gastric regulation is initiated when acidic chyme enters the duodenum and simulates the secretion of hormones and local reflexes that inhibit gastric activity.

Accepted Answer

A)  gastrointestinal 
B)  cephalic 
C)  laryngo-pharyngeal 
D)  voluntary 
A)  gastrointestinal 
B)  cephalic 
C)  laryngo-pharyngeal 
D)  voluntary

Question 15

Match the process or term with the best description.
-bolus

Accepted Answer

A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis 
A) swallowing 
B) chewing 
C) ball of food 
D) semifluid material 
E) phagocytosis

Question 16

Where does the majority of nutrient absorption occur?

Accepted Answer

A)  the stomach and duodenum 
B)  the duodenum and ileum 
C)  the jejunum and duodenum 
D)  the ileum and jejunum 
A)  the stomach and duodenum 
B)  the duodenum and ileum 
C)  the jejunum and duodenum 
D)  the ileum and jejunum

Question 17

Which of the following structures has both endocrine and exocrine tissue?

Accepted Answer

A)  colon 
B)  liver 
C)  pancreas 
D)  gallbladder 
E)  spleen 
A)  colon 
B)  liver 
C)  pancreas 
D)  gallbladder 
E)  spleen

Question 18

The enteric plexus

Accepted Answer

A)  is found in the mucosa. 
B)  consists of the myenteric plexus and the celiac plexus. 
C)  contains sympathetic neurons and fibers. 
D)  controls movement and secretion of the digestive tract. 
E)  is a valve in the GI tract. 
A)  is found in the mucosa. 
B)  consists of the myenteric plexus and the celiac plexus. 
C)  contains sympathetic neurons and fibers. 
D)  controls movement and secretion of the digestive tract. 
E)  is a valve in the GI tract.

Question 19

Use the key to choose the best answer.
-(1) number of villi in small intestine;
(2) number of villi in large intestine

Accepted Answer

A) Choose this if the first item is greater than the second item. 
B) Choose this if the first item is less than the second item. 
C) Choose this if the first item is equal or nearly equal to the second item. 
A) Choose this if the first item is greater than the second item. 
B) Choose this if the first item is less than the second item. 
C) Choose this if the first item is equal or nearly equal to the second item.

Question 20

The hepatic sinusoids

Accepted Answer

A)  transport bile. 
B)  have phagocytic cells in their lining. 
C)  are part of the portal triad. 
D)  connect to the gallbladder. 
E)  do not have a function. 
A)  transport bile. 
B)  have phagocytic cells in their lining. 
C)  are part of the portal triad. 
D)  connect to the gallbladder. 
E)  do not have a function.

Exam 24: Digestive System

Arrange the following events in the correct order: (1) absorption of lipids (2) emulsification (3) micelle formation (4) digestion of lipids

Match the enzyme with the products of its digestive activity. -salivary amylase

Enterokinase

Match the enzyme or hormone with the organ that produces it. -trypsin

Blockage of the ileocecal valve would prevent

Match the enzyme or hormone with the organ that produces it. -lactase

Which of the following is NOT a necessary function of the tongue?

Which of the following is true?

How are ions such as sodium, potassium, calcium, magnesium, and phosphate transported from the intestinal lumen?

The defecation reflex

Which of the following occurs in the large intestine?

If the thoracic duct were tied off, which of the following classes of nutrients would not enter the circulatory system at their normal rate?

What disease is caused by the absence of enteric neurons in the distal large intestine?

The _____________ phase of gastric regulation is initiated when acidic chyme enters the duodenum and simulates the secretion of hormones and local reflexes that inhibit gastric activity.

Match the process or term with the best description. -bolus

Where does the majority of nutrient absorption occur?

Which of the following structures has both endocrine and exocrine tissue?

The enteric plexus

Use the key to choose the best answer. -(1) number of villi in small intestine; (2) number of villi in large intestine

The hepatic sinusoids

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