Chapter 24: The Digestive System Flashcards Preview

Anatomy and physiology > Chapter 24: The Digestive System > Flashcards

Flashcards in Chapter 24: The Digestive System Deck (67)
Loading flashcards...
1

Name organs in the digestive system.

1. Liver
2. Gallbladder
3. Pancreas

2

List accessory structures of the digestive system.

1. Salivary glands
2. Pancreas
3. Liver
4. Gallbladder

3

The active process that occurs when materials enter the digestive tract via the mouth is...

ingestion

4

the lining of the digestive tract plays a defensive role by protecting surrounding tissues against...

1. corrosive effects of digestive acids and enzymes
2. mechanical stresses
3. pathogenic organisms swallowed with food

5

sympathetic stimulation of the muscularis externa promotes...

muscular inhibition and relaxation

6

the mucous-producing, unicellular glands found in the mucosal epithelium of the stomach and small and large intestine are..

mucous (goblet) cells

7

which of the layers of the digestive tube is most responsible for peristalsis along the esophagus?

muscularis externa

8

the muscular layers involved with peristalsis are described as...

circular and longitudinal

9

swirling, mixing, and churning motions of the digestive tract provide...

mechanical processing after ingestion

10

powerful peristaltic contractions moving the contents of the colon toward the rectum are called...

mass movements

11

accelerated secretions by the salivary glands, resulting in the production of watery saliva containing abundant enzymes, are promoted by...

parasympathetic stimulation

12

the submandibular glands produce saliva, which is...

both mucus and serous

13

the three pairs of salivary glands that secret into the oral cavity are the...

parotid, sublingual, and submandibular

14

crushing, mashing, and grinding food are accomplished by the action of...

bicuspids

15

the three phases of deglutition are...

buccal, pharyngeal, and esophageal

16

on its way to the esophagus, food normally passes through the...

oropharynx and laryngopharynx

17

the pharyngeal muscles that push the food bolus toard the esophagus are the...

pharyngeal constrictor muscles

18

the esophageal glands that produce a mucous secretion that reduces friction between the bolus and the esophageal lining are located in the...

submucosa

19

the primary function of the esophagus is to...

convey solid foods and liquids to the stomach

20

the inferior end of the esophagus normally remains in a state of active contraction that...

prevents backflow of materials from the stomach into the esophagus

21

the hormone gastrin...

increases the activity of parietal and chief cells

22

the release of chyme from the stomach into the duodenum is regulated by the...

pyloric sphincter

23

what inhibits gastric contractions?

1. secretin
2. somatostatin
3. distention of duodenal stretch receptors

24

what is secreted by the stomach?

somatostatin

25

the three divisions of the small intestine are...

duodenum, jejunum, and ileum

26

the myenteric plexus of the intestinal tract is found...

between the circular and longitudinal muscle layers

27

an enzyme not found in pancreatic juice is...

GIP

28

what happens to salivary amylase after it is swallowed?

it is digested and absorbed in the small intestine

29

the three phases of gastric function are...

cephalic, gastric, and intestinal

30

bile is stored and modified in the...

gallbladder