Question

In the digestive system, the pH of the stomach and the intestine, respectively are

• A. Acidic and Acidic
• B. Acidic and Neutral
• C. Acidic and Alkaline
• D. Alkaline and Acidic.

Answer 1

The correct option is C

Acidic and Alkaline

The correct option is C.

Explanation of the correct option:

1. The stomach's pH is between 1-3, which is considered to be acidic.
2. Hydrochloric acid, which assists in destroying the microorganisms by stimulating the digestive enzymes, is to blame for this.
3. Hydrochloric acid is substantially to blame for the low pH of stomach acid (HCl).
4. However, stomach acid only contains a very little amount of HCl.
5. Other elements include sodium chloride(NaCl) and potassium chloride (KCl).
6. These three acids are secreted by the stomach wall's lining cells.
7. The intestine has a pH of approximately 7.5, which is somewhat alkaline.
8. This pH range aids in the digestion of the nutrients and the inactivation of the acid.

Explanations of the incorrect options:

Option A:

1. The neutral pH value is 7, and the pH scale goes from 0 to 14.
2. Acidic pH values are those below 7, while alkaline pH values are those above 7. (basic).
3. From pH 6 in the small intestine to around pH 7.4 in the terminal ileum, the pH rises steadily.
4. pH falls to 5.7 in the caecum before gradually rising once more to pH 6.7 in the rectum.
5. A pH of 7.4, which is just on the alkaline side of neutral, is excellent for human health.

Option B:

1. A good balance of acidity and alkalinity is something that the human body is designed to do on its own.
2. A crucial part of this process is played by the kidneys and lungs.
3. On a scale of 0 to 14, where 0 is the most acidic and 14 is the most basic, a normal blood pH level is between 7.35 and 7.45.
4. This number may slightly change either way.

Option D:

1. The intestine has a pH of approximately 7.5, which is somewhat alkaline.
2. This pH range aids in the digestion of the nutrients and the inactivation of the acid.
3. The stomach's pH is between 1-3, which is considered to be acidic.
4. Hydrochloric acid, which assists in destroying the microorganisms by stimulating the digestive enzymes, is to blame for this.
5. Hydrochloric acid is substantially to blame for the low pH of stomach acid (HCl).
6. However, stomach acid only contains a very little amount of HCl.
7. Other elements include sodium chloride(NaCl) and potassium chloride (KCl).
8. These three acids are secreted by the stomach wall's lining cells.

Final answer: In the digestive system the pH of the stomach and the intestine, respectively are acidic and alkaline.