From Tasting to Digestion Test 2

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From Tasting to Digestion Test 2

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Question 1
1 / -0

What will happen if mucus is not secreted by the gastric glands?

A
Erosion of stomach wall

B
Erosion of intestinal wall

C
Indigestion of food

D
Enlargement of stomach

Solution

Gastric mucus is a gel-mucous barrier secreted by epithelial cells and glandular cells in the stomach wall. It acts as part of a barrier that protects the stomach wall from the acid and digestive enzymes within the stomach lumen.
So, if mucus is not secreted by the gastric glands, erosion of stomach wall occurs.
Option 'A' is correct.
Question 2
1 / -0

The path taken by food material after ingestion is represented by

A
Mouth ---> Oesophagus ---> Stomach ---> Pharynx

B
Mouth ---> Pharynx ---> Oesophagus ---> Small Intestine ---> Stomach

C
Mouth ---> Pharynx ---> Oesophagus ---> Stomach

D
Oesophagus ---> Mouth ---> Pharynx ---> Stomach
Question 3
1 / -0

The inner layer of the stomach releases

A
Water

B
Blood

C
Minerals

D
Digestive juices
Solution
- The stomach is made of 4 layers. They are serosa, muscularis, submucosa, mucosa. These layers of smooth muscle consist of the outer longitudinal, the middle circular, and the inner oblique muscles.
- The innermost layer or lining (mucosa) contains the glands that release digestive juices which includes pepsin, chymotrypsin, hydrochloric acid etc. Hence, The inner layer of the stomach releases digestive juices.
So, the correct answer is 'digestive juices'.
Question 4
1 / -0

How is shape of stomach?

A
As V

B
As J

C
As O

D
None of the above

Solution

The stomach is a J-shaped, hollow organ located just inferior to the diaphragm in the left part of the abdominal cavity. It is located between the oesophagus and connects with the duodenum. It has two parts fundus and pyloric.
Therefore, the correct answer is option B.
Question 5
1 / -0

Stomach secretes

A
Dilute hydrochloric acid

B
Dilute sulphuric acid

C
Dilute citric acid

D
Dilute nitric acid

Solution

Stomach is a J shaped dilated portion of the alimentary tract. About 2 litres of gastric juices are secreted by specialised secretory glands in the stomach. It consists of: water, mineral salts, mucus, hydrochloric acid, intrinsic factor and inactive enzyme precursors.
The dilute hydrocholoric acid acidifies the food and stops action of salivary amylase, kills microbes and provides acid environment needed for the action of pepsins.
So, the answer is A.
Question 6
1 / -0

Which among the following protects the lining of the stomach from hydrochloric acid?

A
Pepsin

B
Mucus

C
Salivary amylase

D
Bile

Solution

The stomach wall has gastric glands that secrete gastric juice, which is a mixture of enzymes, HCl, and mucus. The stomach wall is always covered by a layer of thick mucus that serves two purposes. One is the lubrication of food masses in order to facilitate movement within the stomach. The other function is to form a protective layer over the epithelium lining of the stomach wall. This mucus layer prevents the lining of the stomach wall from the acidic environment, created by HCl.
So, the correct answer is option B.
Question 7
1 / -0

__________ can be used to treat acidity.

A
Sodium bicarbonate

B
Hydrochloric acid

C
Amylase

D
Pepsin

Solution

When there is an upsurge in the amount of acid produced by the stomach, it can cause acidity. Acidity can also be caused by overeating, stress, unhealthy food habits, etc.
Now, sodium bicarbonate mixed with water acts as an antacid (base) that neutralizes the excess acid.
So, the correct answer is option A.
Question 8
1 / -0

Raju got stomach ache. Which of the following could be a reason?

A
He ate food at seven in the evening.

B
He drank water after eating food.

C
He did not chew the food properly.

D
He did not wash his hands properly after eating food.
Solution
- Chewing breaks your food down from large particles into smaller particles that are more easily digested.
- This also makes it easier for your intestines to absorb nutrients from the food particles as they pass through.
- Chewing properly allows your stomach to work more efficiently and break down your food faster. Hence, Raju got the stomach ache as he did not chew the food properly.
- Thus the correct answer is option C.
Question 9
1 / -0

Taste buds are mainly located in ______ surface of the tongue.

A
Upper

B
Lower

C
Both A and B

D
Margins

Solution

Taste buds are mainly located in upper surface of the tongue and some are also present on the other areas in the mouth and throat.
Question 10
1 / -0

What is the role of acid in our stomach?

A
Acidify the food for proper action of pepsin

B
Conversion of pepsinogen and prorenin into active forms of pepsin and renin

C
Killing of microorganisms present in food

D
All of the above

Solution

The gastric juice is made up of hydrochloric acid, pepsinogen and other digestive enzymes, gastrin, mucus, and bicarbonates. It has a pH ranging from 1 to 2. Its low pH is essential in activating digestive enzyme such as pepsinogen and convert it into the active pepsin, a Proteolytic activity of pepsin and in destroying various pathogens.
Thus, the correct answer is option D.

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Re-Attempt Weekly Quiz Competition

From Tasting to Digestion Test 2

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From Tasting to Digestion Test 2

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SHARING IS CARING

Question 1

Erosion of stomach wall

Erosion of intestinal wall

Indigestion of food

Enlargement of stomach

Solution

Question 2

Mouth ---> Oesophagus ---> Stomach ---> Pharynx

Mouth ---> Pharynx ---> Oesophagus ---> Small Intestine ---> Stomach

Mouth ---> Pharynx ---> Oesophagus ---> Stomach

Oesophagus ---> Mouth ---> Pharynx ---> Stomach

Question 3

Water

Blood

Minerals

Digestive juices

Solution

Question 4

As V

As J

As O

None of the above

Solution

Question 5

Dilute hydrochloric acid

Dilute sulphuric acid

Dilute citric acid

Dilute nitric acid

Solution

Question 6

Pepsin

Mucus

Salivary amylase

Bile

Solution

Question 7

Sodium bicarbonate

Hydrochloric acid

Amylase

Pepsin

Solution

Question 8

He ate food at seven in the evening.

He drank water after eating food.

He did not chew the food properly.

He did not wash his hands properly after eating food.

Solution

Question 9

Upper

Lower

Both A and B

Margins

Solution

Question 10

Acidify the food for proper action of pepsin

Conversion of pepsinogen and prorenin into active forms of pepsin and renin

Killing of microorganisms present in food

All of the above

Solution

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