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Digestive System

Total questions: 26

Worksheet time: 26mins

Name
Class
Date
1.

Where do the pancreatic exocrine secretions empty into?

a)

duodenum

b)

jejenum

c)

gall bladder

d)

bloodstream

e)

liver

2.

Which of the following is NOT involved in the control of saliva secretion?

a)

parasympathetic division of ANS

b)

sympathetic division of ANS

c)

sensory neurones in mouth

d)

chemoreceptors in nose

e)

deglutition centre of brainstem

3.

Which of the following structures-layers of the digestive tract are correctly associated?

a)

epithelium - submucosa

b)

muscularis mucosae - mucosa

c)

lamina propria - serosa

d)

muscularis mucosae - muscularis externa

e)

myenteric plexus - submucosa

4.

Which of the following structures is the most inferior region of the small intestine?

a)

duodenum

b)

uvula

c)

ileum

d)

caecum

e)

jejunum

5.

Which of the following statements is correctly matched?

a)

apnoea - dysphagia

b)

compromised deglutition - dysphagia

c)

cessation of breathing - deglutition

d)

loss of appetite - emesis

e)

vomiting - anorexia

6.

How many organs are there in the human digestive system?

a)

5

b)

9

c)

3

d)

8

e)

7

7.

Histamine receptors are located on which of the following classes of cell?

a)

stem cells

b)

G cells

c)

mucus neck cells

d)

chief cells

e)

parietal cells

8.

How many sphincters control the movement of food between the mouth and ileum?

a)

5

b)

2

c)

3

d)

4

e)

1

9.

Which of the following associations concerning gastric glands is correct?

a)

G-cell - gastric juice

b)

parietal cells - intrinsic factor

c)

parietal cells - gastrin

d)

parietal cells - pepsinogens

e)

stem cells - mucus

10.

In which sequence do the following events occur during emesis?    

1. apnoea   

2. elevation of the soft palate    

3. contraction of the abdominal muscles    

4. contraction of the pyloric sphincter    

5. relaxation of the lower oesophageal sphincter

a)

5, 4, 3, 1, 2

b)

4, 3, 5, 1, 2

c)

3, 4, 5, 2, 1

d)

1, 3, 4, 5, 2

e)

1, 2, 4, 5, 3

11.

Which of the following would be the effect of a drug that blocked receptors for the hormone gastrin?    

1. A reduction in the force of gastric contractions in response to food in the stomach

    2. A reduction in the force of gastric contractions in response to the taste of food

    3. Greater inhibition of gastric motility in response to a reduction in pH of the duodenum

a)

1 only

b)

2 only

c)

1 & 2

d)

2 & 3

e)

3 only

12.

Which of the following is NOT a potent stimulator of gastric juice secretion?

a)

caffeine

b)

polypeptides

c)

proteins

d)

alcohol

e)

amino acids

13.

Which of the following is NOT involved in control of the digestive system?

a)

hormones released by the digestive tract

b)

the release of paracrine mediators into the bloodstream

c)

local reflexes mediated by enteric nervous system

d)

diffusion of chemical messengers through extracellular space

e)

long reflexes that involve neurones of somatosensory system

14.

Which of the following does NOT cause an increase in saliva secretion?

a)

sight of food

b)

thought of food when hungry

c)

increased parasympathetic tone to salivary glands

d)

smell of food

e)

decreased sympathetic tone to salivary glands

15.

Which of the following is found in the stomach but not in other parts of the digestive tract?

a)

muscularis externa layer

b)

longitudinal muscle layer

c)

oblique muscle layer

d)

circular muscle layer

e)

muscularis mucosa layer

16.

Which of the following effects on gastric motility are mediated by which hormone?   

1. Gastrin   

2. Secretin   

3. Cholecystokinin   

A. Stimulation    B. Inhibition

a)

1-A, 2-A, 3-B

b)

1-A, 2-B, 3-B

c)

1-A, 2-B, 3-A

d)

1-B, 2-A, 3-A

e)

1-B, 2-B, 2-A

17.

Which of the following processes does not take place in the mouth?

a)

ingestion

b)

chemical digestion of carbohydrates

c)

chemical digestion of protein

d)

mechiancal digestion

18.

Which of the following layers of the GI tract is the one closest to the lumen?

a)

connective tissue of submucosa

b)

connective tissue of serosa

c)

muscularis externa of mucosa

d)

muscularis mucosae of mucosa

e)

lamina propria of mucosa

19.

Which of the following is/are NOT a constituent of saliva?   

1. an enzyme that initiates the breakdown of carbohydrate   

2. a proline-rich protein that helps lubricate the food in the mouth 

3. a family of proteins that have antibacterial actions

a)

3 only

b)

2 & 3

c)

1 only

d)

2 only

e)

1, 2 & 3

20.

In addition to its blood supply the lamina propria also contains structures that are responsible for draining extracellular fluid and returning it to the circulation. What are these structures are called?

a)

gastric glands

b)

lymphatic vessels

c)

proprial vessels

d)

portal vessels

e)

intestinal glands

21.

Which of the following are constituents of the enteric nervous system?    

1. neurones of the submucosal nerve plexus    

2. parasympathetic preganglionic neurones   

  3. interneurones of the submucosal nerve plexus

a)

2 & 3

b)

1 & 3

c)

2 only

d)

1 & 2

e)

1 only

22.

What is the function of the submucosa layer of the GI tract?

a)

provide strong muscle activity for food peristalsis

b)

to increase surface area for absorption of nutrients

c)

secrete mucus into lumen

d)

to supply blood and lymphatic vessels to GI tract

e)

to protect all other layers of GI tract

23.

Which of the following is/are involved in the propulsive movement of food along the digestive tract?    

1. peristalsis    

2. segmentation   

  3. enteric nervous system    

4. circular muscle layer

a)

2 & 3

b)

1 & 4

c)

1, 3 & 4

d)

2 only

e)

2, 3 & 4

24.

Which of the following vessels supply blood to the liver?    

1. celiac artery    

2. superior mesenteric artery    

3. inferior mesenteric artey    

4. portal vein

a)

1 & 4

b)

4 only

c)

1 & 2

d)

2 & 3

e)

1, 2 & 3

25.

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

a)

mixing of foodstuffs

b)

mechanical digestion of foodstuffs

c)

chemical digestion of nutrients

d)

storage of foodstuffs

e)

absorption of nutrients

26.

Which of the following statements about emesis is/are TRUE?

1. emesis is controlled by a centre in the brainstem

2. semicircular canals contribute to emesis following eating something toxic

3. cerebral cortex contributes to emesis associated with travel sickness

a)

1 & 3

b)

1 only

c)

1 & 2

d)

2 & 3

e)

1, 2 & 3

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