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Flashcards in Chapter 23 Deck (30):
1

The major site for nutrient absorption is the __________.

small intestine

2

The primary goal of digestive tract regulatory mechanisms is to optimize nutrient breakdown and absorption.

True

3

The serous membrane that covers the external surface of most digestive organs is called the __________.

visceral peritoneum

4

__________ circulation collects nutrient-rich blood from the GI tract and delivers it to the liver.

Hepatic portal

5

serosa

protective outermost layer of the alimentary canal

6

mucosa

. main site of nutrient absorption

7

submucosa

C. moderately dense connective tissue that has a rich supply of blood, lymphatic vessels, and nerve fibers

8

muscularis externa

. responsible for segmentation and peristalsis

9

Saliva contains enzymes that break down proteins.

False

10

The permanent dentition consists of __________ teeth in a full set.

32

11

A weak gastroesophageal sphincter can result in heartburn.

true

12

Which of the following is NOT a function of the stomach?

The stomach chemically digests lipids.

13

The phases of gastric secretion from first to last are __________.

cephalic phase, gastric phase, intestinal phase

14

The increased concentration of HCO3- in blood draining from the stomach is called __________.

the alkaline tide

15

The __________ is the first segment of the small intestine.

duodenum

16

Digestion of carbohydrates and proteins by brush border enzymes occurs within the ________ of the small intestine.

microvilli

17

Bile is stored and concentrated in the __________.

gallbladder

18

Which of the following is NOT a characteristic of the liver?

It has three lobes.

19

__________ is NOT found in pancreatic secretions.

Cholecystokinin (CCK)

20

Most digestion occurs in the small intestine.

True

21

Most water is absorbed in the __________.

small intestine

22

Bacterial flora in the large intestine do NOT produce __________.

intrinsic factor

23

Diarrhea results when food passes too quickly through the large intestine.

True

24

lipids

. fatty acids and monoglycerides

25

proteins

amino acids

26

carbohydrates

. monosaccharides

27

nucleic acids

nucleotides

28

Pepsin enzymatically digests __________.

protein

29

Someone on a fat-free diet would not efficiently absorb vitamin D from their diet.

true

30

Which of the following is NOT an accessory organ of the digestive system?

intestines