Question 1

Which of the following statements is true about teeth?

Accepted Answer

A)   The primary component of teeth is dentin.
B)   The outer surface of enamel forms the crown of a tooth.
C)   The root is covered by cementum.
D)   All of the choices are correct.E) A) and C)
F) C) and D)

Question 2

As a protein is broken down into smaller and smaller fragments, each fragment ultimately requires splitting of the last peptide bond within it. The breaking of the bond between those last two amino acids is catalyzed by the enzyme

Accepted Answer

A)   pepsin.
B)   chymotrypsin.
C)   dipeptidase.
D)   trypsin.
E)   glucoamylase.F) B) and D)
G) All of the above

Question 3

Which phase of digestion involves the thought, smell, and sight of food?

Accepted Answer

A)   Gastric phase
B)   Cephalic phase
C)   Enteric phase
D)   Colic phaseE) All of the above
F) A) and C)

Question 4

At the pylorus of the stomach, closure of the pyloric sphincter during the multistep process of gastric emptying leads to a reverse current of material; this reverse flow event is known as ________.

Accepted Answer

The answer of At the pylorus of the stomach, closure...

Question 5

Lactose intolerant individuals cannot digest the ________ lactose because they lack the enzyme ________.

Accepted Answer

A)   polysaccharide; maltase
B)   disaccharide; lactase
C)   monosaccharide; dextrolactase
D)   lipid; pancreatic lipase
E)   fatty acid; sucrolactaseF) B) and C)
G) D) and E)

Question 6

Mastication is one component of the mechanical digestion of food.

Accepted Answer

A) True 
 B)False

Question 7

An enzyme found within saliva is salivary

Accepted Answer

A)   pancreatase.
B)   nuclease.
C)   amylase.
D)   protease.
E)   pepsin.F) D) and E)
G) C) and E) C

Question 8

"Segmentation" within the small intestine refers to the

Accepted Answer

A)   propulsion of material between the segments of the GI tract.
B)   division of function between the different segments of the small intestine.
C)   back-and-forth motion that mixes chyme with glandular secretions.
D)   gastroileal reflex that moves materials from the stomach to the large intestine.E) B) and C)
F) A) and D) C

Question 9

Lipid molecules that are absorbed from the GI tract enter

Accepted Answer

A)   mesenteric arteries.
B)   mesenteric veins.
C)   lymphatic capillaries.
D)   the liver.E) None of the above
F) B) and C)

Question 10

The term "canines" describes the teeth that

Accepted Answer

A)   are most anterior, used for slicing and cutting.
B)   are lateral to the incisors, used for puncturing and tearing.
C)   bear dental cusps for cutting and grinding.
D)   are only found as permanent teeth.E) C) and D)
F) B) and C)

Question 11

Gross & microscopic anatomy of the alimentary canal. 
-This figure shows an intestinal villus. What specific layer does number 4 indicate?

Accepted Answer

A)   Circular layer of muscularis
B)   Longitudinal layer of muscularis
C)   Lamina propria
D)   Basement membrane
E)   Muscularis mucosaeF) A) and D)
G) A) and E)

Question 12

The presence of food in the stomach triggers the release of a hormone that stimulates contraction of the pyloric sphincter. Specifically, these events involve release of

Accepted Answer

A)   secretin in the cephalic phase of digestion.
B)   gastrin in the gastric phase of digestion.
C)   CCK in the intestinal phase of digestion.
D)   lipase in the intestinal phase of digestion.
E)   chyle in the secretory phase of digestionF) B) and E)
G) C) and D)

Question 13

The lingual salivary glands are

Accepted Answer

A)   unicellular endocrine glands.
B)   unicellular exocrine glands.
C)   multicellular endocrine glands.
D)   multicellular exocrine glands.E) A) and D)
F) A) and C)

Question 14

An organ that helps break down food but is not part of the tube through which the foodstuffs pass is referred to as a(n)

Accepted Answer

A)   chemically digesting organ.
B)   accessory digestive organ.
C)   alimentary canal organ.
D)   diffuse ingestive structure.
E)   organ of mastication.F) A) and B)
G) A) and C) B

Question 15

Stenosis (constriction)  of the hepatopancreatic ampulla would interfere with

Accepted Answer

A)   the transport of bile and pancreatic juice.
B)   the secretion of mucus.
C)   the passage of chyme into the small intestine.
D)   peristalsis.
E)   salivary gland secretion.F) A) and E)
G) B) and D)

Question 16

What is the correct order for the list of structures of the large intestine, starting at the cecum and ending at the rectum?
A: Left colic flexure
B: Ascending colon
C: Transverse colon
D: Right colic flexure
E: Sigmoid colon
F: Descending colon

Accepted Answer

A)   f, c, d, e, a, b
B)   b, d, c, a, f, e
C)   e, b, a, c, d, f
D)   b, a, c, d, f, e
E)   e, b, d, c, a, fF) A) and B)
G) C) and D)

Question 17

Late one night, while studying for your anatomy class, you open a box of saltine crackers to do a little snacking. After chewing on a starchy morsel for a few minutes, you begin to notice a sweet taste in your mouth. What accounts for this?

Accepted Answer

A)   "Sweet" taste receptors are slower to respond than others
B)   Activity of bacteria in the mouth lowers the pH
C)   Esophageal reflux
D)   Salivary amylase activity
E)   Phagocytosis by the pharyngeal tonsils produces by-products that taste sweetF) B) and E)
G) C) and D)

Question 18

Which is the layer of the serous membrane that directly covers the surface of internal organs?

Accepted Answer

A)   Omental layer
B)   Visceral peritoneum
C)   Parietal peritoneum
D)   Rectal peritoneum
E)   Muscularis mucosaF) B) and C)
G) B) and E)

Question 19

The sinusoids of the liver are lined by phagocytic reticuloendothelial cells, also called ________ cells.

Accepted Answer

The answer of The sinusoids of the liver are lined...

Question 20

Within intestinal epithelial cells, lipids are wrapped in a protein coat to form ________, which will be packaged into secretory vesicles at the Golgi apparatus.

Accepted Answer

chylomicro...

Exam 26: Digestive System

Which of the following statements is true about teeth?

Correct AnswerverifiedShow Answer

As a protein is broken down into smaller and smaller fragments, each fragment ultimately requires splitting of the last peptide bond within it. The breaking of the bond between those last two amino acids is catalyzed by the enzyme

Correct AnswerverifiedShow Answer

Which phase of digestion involves the thought, smell, and sight of food?

Correct AnswerverifiedShow Answer

At the pylorus of the stomach, closure of the pyloric sphincter during the multistep process of gastric emptying leads to a reverse current of material; this reverse flow event is known as ________.

Correct AnswerverifiedShow Answer

Lactose intolerant individuals cannot digest the ________ lactose because they lack the enzyme ________.

Correct AnswerverifiedShow Answer

Mastication is one component of the mechanical digestion of food.

Correct AnswerverifiedShow Answer

An enzyme found within saliva is salivary

Correct AnswerverifiedC

"Segmentation" within the small intestine refers to the

Correct AnswerverifiedC

Lipid molecules that are absorbed from the GI tract enter

Correct AnswerverifiedShow Answer

The term "canines" describes the teeth that

Correct AnswerverifiedShow Answer

Gross & microscopic anatomy of the alimentary canal. -This figure shows an intestinal villus. What specific layer does number 4 indicate?

Correct AnswerverifiedShow Answer

The presence of food in the stomach triggers the release of a hormone that stimulates contraction of the pyloric sphincter. Specifically, these events involve release of

Correct AnswerverifiedShow Answer

The lingual salivary glands are

Correct AnswerverifiedShow Answer

An organ that helps break down food but is not part of the tube through which the foodstuffs pass is referred to as a(n)

Correct AnswerverifiedB

Stenosis (constriction) of the hepatopancreatic ampulla would interfere with

Correct AnswerverifiedShow Answer

What is the correct order for the list of structures of the large intestine, starting at the cecum and ending at the rectum? A: Left colic flexure B: Ascending colon C: Transverse colon D: Right colic flexure E: Sigmoid colon F: Descending colon

Correct AnswerverifiedShow Answer

Late one night, while studying for your anatomy class, you open a box of saltine crackers to do a little snacking. After chewing on a starchy morsel for a few minutes, you begin to notice a sweet taste in your mouth. What accounts for this?

Correct AnswerverifiedShow Answer

Which is the layer of the serous membrane that directly covers the surface of internal organs?

Correct AnswerverifiedShow Answer

The sinusoids of the liver are lined by phagocytic reticuloendothelial cells, also called ________ cells.

Correct AnswerverifiedShow Answer

Within intestinal epithelial cells, lipids are wrapped in a protein coat to form ________, which will be packaged into secretory vesicles at the Golgi apparatus.

Correct Answerverifiedchylomicro...View AnswerShow Answer

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Lactose intolerant individuals cannot digest the lactose because they lack the enzyme .

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C

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B

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