Deck 15: Digestive System

Question 1

The ________ nervous system innervates the intestinal mucosa and may stimulate the secretion of intestinal enzymes.

A)sympathetic
B)parasympathetic
C)somatic
D)central

Answer 1

B

Question 2

The mineral required for the normal conduction of nerve impulses as well as ATP - ADP conversions is

A)chlorine.
B)magnesium.
C)potassium.
D)sulfur.

Answer 2

C

Question 3

_________ is secreted by stomach and is important for the absorption of Vitamin B₁₂ in the _______.

A)Pepsin; small intestine
B)Intrinsic factor; small intestine
C)Intrinsic factor; large intestine
D)Gastrin; large intestine

Answer 3

B

Question 4

Fatty chyme entering the small intestine stimulates the secretion of _______, which stimulates the pancreas to secrete __________.

A)secretin; enzymes
B)gastrin; enzymes
C)gastrin; carbonates
D)cholecystokinin; enzymes

Question 5

The ________ salivary glands secrete a saliva rich in ________.

A)sublingual; mucus
B)submandibular; water
C)submaxillary; amylase
D)parotid; amylase

Question 6

One of the nutrients important for the synthesis of DNA and RNA is

A)folic acid.
B)riboflavin.
C)Vitamin c
D)biotin.

Question 7

One of the nutrients active in the synthesis of proteins and antibodies is

A)biotin.
B)pantothenic acid.
C)B_6.
D)B_2.

Question 8

Acid chyme entering the duodenum causes the intestinal mucosa to secrete the hormone ________, which stimulates the secretion of ________ that is rich in bicarbonates.

A)secretin; intestinal juice
B)secretin; pancreatic juice
C)cholecystokinin; pancreatic juice
D)cholecystokinin; bile

Question 9

An organic compound that the body needs in minute amounts is a

A)mineral.
B)vitamin.
C)nutrient.
D)calorie.

Question 10

A nutrient that is required for the synthesis of fatty acids as well as playing a role in cellular respiration is ________.

A)folic acid
B)riboflavin
C)vitamin C
D)biotin

Question 11

Gastric juice secretion is increased by ________ impulses and the hormone ________, which is produced by the stomach.

A)sympathetic; gastrin
B)sympathetic; secretin
C)parasympathetic; gastrin
D)parasympathetic; secretin

Question 12

The gastric enzyme ________ is secreted in inactive form and activated by the low pH of gastric juice.

A)rennin
B)pepsin
C)intrinsic factor
D)trypsin

Question 13

The folds in the mucosa of the stomach which allows it to expand as it fills with food are the

A)rugae.
B)villi.
C)microvilli.
D)all of these choices are correct

Question 14

There is a total of ________ deciduous teeth and ________ permanent teeth.

A)24; 36
B)20; 32
C)22; 34
D)20; 36

Question 15

The hormone that stimulates the secretions of the stomach is

A)secretin.
B)cholecystokinin.
C)gastrin.
D)pepsin.

Question 16

In addition to the secretion of bile, the liver is active in

A)synthesizing blood proteins.
B)converting nutrients into usable forms.
C)detoxification.
D)all of these choices are correct

Question 17

The alimentary canal is approximately ______ feet long in an adult.

A)15
B)20
C)25
D)29

Question 18

The fat-soluble vitamin required for the formation and maintenance of cell membranes is

A)vitamin A.B.vitaminB_6..C.vitamin D.D.vitamin E.

Question 19

________ catalyzes the digestion of starch and glycogen to maltose.

A)Amylase
B)Pepsin
C)Lipase
D)Maltase

Question 20

The layers of the alimentary canal, from outside in, are the

A)serosa, muscular, submucosa and mucosa.
B)serosa, muscular, mucosa and submucosa.
C)mucosa, submucosa, muscular and serosa.
D)mucosa, muscular, submucosa, and serosa.

Question 21

People who have had their gallbladder removed would likely experience which digestive issue?

A)A complete inability to digest fats.
B)A decreased ability to digest carbohydrates.
C)A decreased ability to digest lipids.
D)A decreased ability to digest proteins.

Question 22

The layer of the tooth where blood vessels and nerves are found is the ___________.

A)dentin
B)enamel
C)root
D)pulp

Question 23

As fatty acids are absorbed, the resulting fat molecules are coated in protein for what reason?

A)Coating them in protein makes them easier to digest in the stomach.
B)Fats are not soluble in the water portion of plasma, but fats encased in protein are.
C)It is a natural function of bile.
D)None of the above.

Question 24

Chyme contains which of the following?

A)hydrochloric acid
B)pepsin
C)partially digested food
D)all of the above

Question 25

The pancreas is directly attached to the ___________, into which it secretes pancreatic juice.

A)stomach
B)duodenum
C)cecum
D)ileum

Question 26

Chewing is considered digestion because:

A)The action of chewing rapidly hydrolyzes bonds between glucose molecules.
B)Grinding food into smaller pieces aids digestion by increasing surface area.
C)Food stays in the mouth long enough for glycogen to be broken down and absorbed.
D)Chewing is a form of mixing motion called segmentation.

Question 27

Much of the mucus in the mouth comes from the _____________ salivary gland under the tongue.

A)parotid
B)submandibular
C)sublingual
D)subtastebud

Question 28

Secretions released by the hepatopancreatic sphincter would include:

A)both bile and bicarbonate.
B)bile only.
C)bicarbonate only.
D)neither bile nor bicarbonate.

Question 29

In addition to the normal secretions by the stomach, infants produce __________.

A)pepsin
B)gastrin
C)rennin
D)intrinsic factor

Question 30

The hollow space inside of the digestive tract is the ________.

A)lumen
B)goblet
C)peristaltic space
D)mesentary

Question 31

During a swallow, the __________ has to keep food out of the airways.

A)esophagus
B)tongue
C)epiglottis
D)cardiac sphincter

Question 32

Which of the following is not an intestinal enzyme?

A)sucrase
B)pepsin
C)peptidase
D)lactase

Question 33

Which of the following is not an accessory organ to the digestive system?

A)liver
B)teeth
C)duodenum
D)gallbladder

Question 34

Blood travelling to the liver can be said to be _______ in nutrients and ________ in oxygen, compared to blood elsewhere.

A)higher, higher
B)lower, higher
C)higher, lower
D)lower, lower

Question 35

Both ________ and ________ catalyze the hydrolysis of proteins to form peptides.

A)pepsin; peptidase
B)trypsin; peptidase
C)pepsin; rennin
D)pepsin; trypsin

Question 36

Deciduous teeth lack _______, whereas permanent teeth have all four types of teeth.

A)incisors
B)cuspids
C)bicuspids
D)molars

Question 37

Teeth that are well suited to biting off food are the __________.

A)incisors
B)bicuspids
C)premolars
D)molars

Question 38

The most superior portion of the stomach is the __________.

A)cardiac region
B)fundic region
C)body
D)pyloric region

Question 39

Which of the following is not part of the alimentary canal?

A)esophagus
B)pancreas
C)duodenum
D)rectum

Question 40

Bile, which emulsifies fats, is produced by the

A)gall bladder.
B)pancreas.
C)small intestine.
D)liver.

Question 41

The primary function of the large intestine is the

A)completion of digestion.
B)completion of digestion and nutrient absorption.
C)absorption of the end products of digestion.
D)absorption of water and certain minerals and vitamins.

Question 42

The end products of protein digestion are ________, which are absorbed into ________ of villi.

A)amino acids; capillaries
B)monosaccharides; capillaries
C)peptides; capillaries
D)monoglycerides and fatty acids; lacteals

Question 43

The end products of fat digestion are converted into ________ within epithelial cells and move into the ________ of villi.

A)triglycerides; capillaries
B)small fatty acids; capillaries
C)chylomicrons; lacteals
D)monoglycerides and fatty acids; lacteals

Question 44

The enzyme catalyzing the hydrolysis of triglycerides is

A)trypsin.
B)lipase.
C)maltase.
D)lactase.

Question 45

Which organ functions exclusively for transporting food through the alimentary canal?

A)rectum
B)esophagus
C)stomach
D)large intestine

Question 46

Feces contains which of the following?

A)mucus
B)nondigested food residues
C)bacteria
D)all of the above

Question 47

Carbohydrate digestion begins in the ________ and concludes in the ________.

A)mouth; large intestine
B)mouth; small intestine
C)stomach; large intestine
D)small intestine; small intestine

Question 48

_________ are primarily used as an energy source, but unused quantities are converted into _________ and stored.

A)Amino acids; triglycerides
B)Monosaccharides; triglycerides
C)Fatty acids; cholesterol
D)Monosaccharides; disaccharides

Question 49

Which step of cellular respiration within the cytosol?

A)hydrolysis
B)citric acid cycle
C)glycolysis
D)electron transport chain

Question 50

A nutrient that the body cannot synthesize, but instead must get from a balanced diet, is said to be ____________.

A)vitamins
B)essential
C)amino acids
D)chylomicrons