Oesophagus & Stomach

Q. Kevin consumed a lot of carbohydrates and proteins. If he suffers indigestion by the end of the day, guess the possible places where the process of digestion could have gone wrong?

1. Mouth, Stomach, Duodenum
2. Mouth, Stomach, Colon
3. Mouth, Stomach, Pancreas, Liver
4. Mouth, stomach, Gallbladder

Q. Where does the digestion of carbohydrates take place inside the body?

1. Mouth and small intestine
2. Mouth and stomach
3. Stomach and small intestine
4. Stomach only

Q. The constituents of secretions by gastric glands are:

1. Pepsin
2. Mucous
3. Hydrochloric Acid
4. Amylase

Q. If hydrochloric acid is so strong that it can break complex food molecules, why does it not affect the walls of stomach?

1. Stomach is internally protected by mucous membrane which prevents the action of HCl.
2. Salivary amylase secreted in the mouth still remains in the bolus which prevents damage to the stomach.
3. All of these
4. Pepsin is basic which neutralizes HCl and prevents damage to stomach.

Q. Proteins are digested in stomach with the help of________.

1. Gastric juice
2. Saliva
3. None of these
4. Amylase

Q. Pyloric sphincter allows only________ to pass into the duodenum.

1. Chyme
2. Bolus
3. Bile
4. Neutralized food

Q.

Raju suffering from acidity in stomach. He consumed “ENO” – salt solution and gets instant relief. What is the possible reason?

1. ENO salt solution neutralizes HCl.

2. ENO salt solution stops HCl secretion.

3. ENO salt dilutes the acid released.

4. None of the above.

Q. Which of the following enzymes show maximum activity in an acidic pH of 1.5-2.5?

1. Trypsin
2. Pepsin
3. Lipase
4. Amylase

Q.

Name the labels in the structure below:

1. X-Esophageal sphincter, Y- Intestinal Sphincter

2. X- Sphincter, Y- Smooth muscle

3. X – Esophageal sphincter, Y- Pyloric sphincter

4. X – Pyloric sphincter, Y- Esophageal sphincter

Q.

The absence of HCl in gastric juice would ___________ .

1. accelerate the action of enzymes in the stomach.

2. kill all microorganisms entering through food.

3. hamper the action of pepsin and promote the growth of microorganisms.

4. enhance excessive digestion and promote the growth of microorganisms.