Question 1

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-protein digestion begins

Accepted Answer

Protein digestion begins in the stomach with the action of the enzyme pepsin and is completed in the small intestine lumen with the help of proteases secreted by the pancreas.

Answer: A, C, and D
 Carbohydrate digestion begins in the mouth with the action of amylase, continues in the small intestine lumen with the help of pancreatic amylase, and is completed intracellularly within the small intestine brush border with the action of various disaccharidases.

Answer: B and C
 Fat digestion begins in the stomach with the action of lipase and is completed in the small intestine lumen with the help of bile salts, pancreatic lipase, and various other lipases secreted by the pancreas.

Question 2

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-pepsin(ogen)

Accepted Answer

Pepsinogen is produced by the chief cells in the stomach.

Question 3

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-salivary amylase

Accepted Answer

Salivary amylase is produced by the salivary glands.

Question 4

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-fat digestion is completed

Accepted Answer

Fat digestion commences in the small intestine lumen with the action of bile and pancreatic lipase. It is completed in the same location with the further action of lipase on the emulsified fat droplets.

Question 5

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-pancreatic duct cell

Accepted Answer

The answer of Match the descriptions, labelled a. through l.,...

Question 6

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-carbohydrate digestion is completed

Accepted Answer

The answer of Match the digestive secretions, labelled a. through...

Question 7

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-pyloric gland area

Accepted Answer

The pyloric gland area is known for secreting gastrin, which plays a crucial role in the digestive process by stimulating the secretion of gastric acid by the parietal cells of the stomach and aiding in gastric motility.

Question 8

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-HCl

Accepted Answer

The answer of Match the descriptions, labelled a. through l.,...

Question 9

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-carbohydrate digestion begins

Accepted Answer

Carbohydrate digestion begins in the mouth with the action of salivary amylase.

Answer: C and D
 Carbohydrate digestion is completed in the lumen of the small intestine with the help of pancreatic amylase and brush border enzymes.

Answer: B and E
 Stomach and colon do not play significant roles in carbohydrate digestion.

Question 10

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-aminopeptidase

Accepted Answer

Aminopeptidase functions inside the brush border, where it plays a role in the final steps of protein digestion by cleaving amino acids from the N-terminus of peptides.

Question 11

Match the gastric cell types, labelled a. through d., with the correct characteristics. (Options may be used more than once or not at all.)
a.chief cells
b.parietal cells
c.mucous cells
d.G cells of PGA
-secrete HCl

Accepted Answer

Parietal cells are responsible for secreting hydrochloric acid (HCl) in the stomach. Chief cells secrete pepsinogen, which is the inactive precursor of pepsin, an enzyme that helps in the breakdown of proteins. Mucous cells secrete mucus to protect the stomach lining from the corrosive effects of stomach acid. G cells of PGA secrete gastrin, a hormone that stimulates the release of HCl and pepsinogen, and promotes gastric motility. However, G cells do not directly secrete HCl.

Question 12

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-pancreatic acinar cell

Accepted Answer

The answer of Match the descriptions, labelled a. through l.,...

Question 13

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-trypsin(ogen)

Accepted Answer

Trypsinogen is produced in the pancreatic exocrine tissue.

Question 14

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-cholecystokinin

Accepted Answer

The answer of Match the descriptions, labelled a. through l.,...

Question 15

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-secretin

Accepted Answer

The answer of Match the descriptions, labelled a. through l.,...

Question 16

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-gastrin

Accepted Answer

The answer of Match the descriptions, labelled a. through l.,...

Question 17

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-protein digestion is completed

Accepted Answer

The answer of Match the digestive secretions, labelled a. through...

Question 18

Match the descriptions, labelled a. through l., with the items listed.
a.secretes NaHCOS1U1B13S1U1B0
b.enzyme for protein digestion secreted by pancreas
c.activates pepsinogen
d.enzyme for fat digestion
e.functions inside brush border
f.secretes gastrin
g.stimulates parietal and chief cells
h.enzyme for carbohydrate digestion that functions primarily in the body of the stomach
i.secreted by chief cells
j.secretes pancreatic enzymes
k.secreted by duodenal cells in response to the presence of acid
l.stimulates pancreatic acinar cells
-lipase

Accepted Answer

Lipase is made in the pancreas and acts on fats.

Answer: D 
 Amylase is made by the pancreas and salivary glands and acts on starch.

Answer: H 
 Pepsin is made in the stomach and acts on proteins.

Answer: E 
 Maltase is made by the small intestine and acts on two-unit sugars.

Answer: F 
 Trypsin is made by the pancreas and acts on proteins and polypeptides.

Answer: G 
 Bile contains cholesterol and helps emulsify fats.

Answer: J 
 The pyloric sphincter is a circular muscle that acts like a valve.

The statements that don't match any of the given choices are:
- A) made in the small intestine and pancreas; act on peptide fragments (this describes peptidase)
- B) glucose, fructose, and galactose are examples (this describes monosaccharides)
- I) stimulates hydrochloric acid secretion (this describes gastrin)

Question 19

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-fat digestion begins

Accepted Answer

Fat digestion commences and is completed in the lumen of the small intestine with the help of bile salts and pancreatic lipase.

Answer: A and B
 Digestion of carbohydrates and proteins commences in the mouth and stomach, respectively, through the action of salivary amylase and pepsin. However, digestion of carbohydrates is not completed in the mouth, and digestion of proteins is not completed in the stomach.

Answer: D
 Intracellular digestion of carbohydrates and proteins occurs in the small intestine brush border with the help of enzymes such as maltase, sucrase, lactase, and peptidases.

Answer: E
 The colon is not involved in the digestion of any of the three main categories of foodstuffs. It mainly absorbs water and electrolytes from the remaining undigested material before excretion as feces.

Question 20

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.)
a.bile salts
b.pepsin(ogen)
c.amylase
d.lipase
e.trypsin(ogen)
-activated by HCl

Accepted Answer

Pepsin(ogen) is activated by HCl in the stomach to break down proteins into smaller peptides.

Answer: A
 Bile salts aid in the digestion and absorption of fats by emulsifying them into smaller droplets.

Answer: E
 Trypsin(ogen) is activated in the small intestine by the pancreatic enzyme enterokinase and breaks down proteins into smaller peptides.

Answer: D
 Lipase is secreted by the pancreas and breaks down fats into fatty acids and glycerol.

Answer: C
 Amylase is secreted by the salivary glands and pancreas and breaks down carbohydrates (starch) into smaller sugars.

Quiz 14: The Urinary System

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -protein digestion begins

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -fat digestion is completed

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -carbohydrate digestion is completed

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -carbohydrate digestion begins

Match the gastric cell types, labelled a. through d., with the correct characteristics. (Options may be used more than once or not at all.) a.chief cells b.parietal cells c.mucous cells d.G cells of PGA -secrete HCl

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -protein digestion is completed

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -fat digestion begins

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) a.bile salts b.pepsin(ogen) c.amylase d.lipase e.trypsin(ogen) -activated by HCl