Digestion and Absorption Test

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Digestion and Absorption Test - 10

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Question 1
1 / -0

Which of the following guards the opening of hepatopancreatic duct into the duodenum

A
Sphincter of Oddi

B
Semilunar valve

C
Ileocaecal valve

D
Pyloric sphincter
Solution
- The bile duct and the pancreatic duct open together into the duodenum as the common hepato-pancreatic duct, which is guarded by the Sphincter of Oddi.
- Semilunar valves are found in at the points where pulmonary artery and aorta leave the heart. These valves prevent blood from getting back into the ventricles.
- Ileocaecal valve is present at the opening of large intestine. It prevents the backward flow of the faecal matter.
- Pyloric sphincter regulates the opening of stomach into duodenum .
- Hence, Option A is correct.
Question 2
1 / -0

Where do certain symbiotic microorganisms normally occur in human body?

A
Caecum

B
Oral lining and tongue surface

C
Vermiform appendix and rectum

D
Duodenum

Solution

Caecum, a part of large intestine, is a small blind sac which hosts some symbiotic micro-organisms which helps in synthesis of Vitamin- B12 and helps in digestion
So, the correct answer is 'Caecum'
Question 3
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Absorption is defined as

A
elimination of solid waste from the digestive system

B
breakdown of foods by enzymatic action

C
passage of nutrients from the gastrointestinal tract into the blood stream

D
mechanical breakdown of fat
Solution
- Absorption is the process by which the products of digestion are absorbed by the blood to be supplied to the rest of the body.
- During absorption, the digested products are transported into the blood or lymph through the mucous membrane. Hence, Absorption is defined as the passage of nutrients from the gastrointestinal tract into the bloodstream.
So, the correct answer is 'passage of nutrients from the gastrointestinal tract into the bloodstream'.
Question 4
1 / -0

Mucosa of duodenum has.

A
Absorptive cells

B
Goblet cells

C
Argentaffin cells

D
All the above
Solution
The mucosa of duodenum has many different types of cells such as -
Enterocytes (Absorptive cells)
Goblet cells (mucous secreting cells)
Enteroendocrine cells (Argentaffin cells) .Hence, Option D is correct.
Question 5
1 / -0

The innermost layer of stomach is called.

A
Serosa

B
Muscularis mucosa

C
Lamina propria

D
Mucosa
Solution
The layers of stomach are as follows : (from outer to inner)
Serosa
Muscularis
Sub-mucosa
Mucosa
Hence, Option D is correct.
Question 6
1 / -0

Digestion is a .......... process

A
Mechanical

B
Chemical

C
Both A and B

D
None of the above

Solution

Digestion is the combination of mechanical as it food convert into a paste by teeth through a process called as mastication and chemical process as it requires various enzymes that break down the complex food material into simpler absorbable form.
So, the correct option is 'Both A and B'
Question 7
1 / -0

What percentage of amino acids is absorbed in the small intestine?

A
15%

B
30%

C
100%

D
90-95%

Solution

Initiation of protein digestion starts in the stomach by pepsin but around 90-95% of protein is digested and absorbed in duodenum and jejunum of the small intestine in the form of amino acids by the action of enzymes trypsin, chymotrypsin and carboxypeptidases.
So the correct option is '90-95%'
Question 8
1 / -0

Which of the following is true regarding the absorption mechanism of carbohydrates in the intestine?

A
Glucose is absorbed passively

B
Galactose is absorbed passively

C
Fructose is transported actively

D
Glucose and galactose are transported actively

Solution

Glucose and galactose transport against the concentration and hence require energy and carrier which transport them from lumen of the intestine to cell and are co transported with sodium ion.
So the correct option is 'Glucose and galactose are transported actively'
Question 9
1 / -0

One of the following is not a common disorder associated with digestive system.

A
Tetanus

B
Diarrhoea

C
Jaundice

D
Dysentery

Solution

Tetanus also called lockjaw disease is a serious bacterial infection that causes painful muscle spasms and can even lead to death, while diarrhea, jaundice, dysentery are disorders related to the digestive system.
So, the correct option is 'Tetanus'.
Question 10
1 / -0

Which one of the following food component in humans reaches the stomach partially digested?

A
Cooked starch

B
Fat

C
Protein, starch

D
Starch, fat

Solution

The digestion process of polysaccharides such as starch will begin in the mouth where it is hydrolysed by salivary amylase, present in saliva, by converting it into maltose, a smaller carbohydrate.
So, the correct option is 'Cooked Starch'

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Digestion and Absorption Test - 10

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Digestion and Absorption Test - 10

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SHARING IS CARING

Question 1

Sphincter of Oddi

Semilunar valve

Ileocaecal valve

Pyloric sphincter

Solution

Question 2

Caecum

Oral lining and tongue surface

Vermiform appendix and rectum

Duodenum

Solution

Question 3

elimination of solid waste from the digestive system

breakdown of foods by enzymatic action

passage of nutrients from the gastrointestinal tract into the blood stream

mechanical breakdown of fat

Solution

Question 4

Absorptive cells

Goblet cells

Argentaffin cells

All the above

Solution

Question 5

Serosa

Muscularis mucosa

Lamina propria

Mucosa

Solution

Question 6

Mechanical

Chemical

Both A and B

None of the above

Solution

Question 7

15%

30%

100%

90-95%

Solution

Question 8

Glucose is absorbed passively

Galactose is absorbed passively

Fructose is transported actively

Glucose and galactose are transported actively

Solution

Question 9

Tetanus

Diarrhoea

Jaundice

Dysentery

Solution

Question 10

Cooked starch

Fat

Protein, starch

Starch, fat

Solution

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