GENERAL HISTOLOGY

SMALL INTESTINE

BODY OF STOMACH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The ph in the small intestines is approximately?
A
ph 2
B
ph 4
C
ph 5
D
ph 6
E
ph 7
Explanation: 

Detailed explanation-1: -The pH gradually increases in the small intestine from pH 6 to about pH 7.4 in the terminal ileum. The pH drops to 5.7 in the caecum, but again gradually increases, reaching pH 6.7 in the rectum.

Detailed explanation-2: -(basic). From pH 6 in the small intestine to around pH 7.4 in the terminal ileum, the pH rises steadily.

Detailed explanation-3: -After swallowing, the food reaches the stomach where upper and lower parts of stomach have different pH values. The upper part has a pH of 4−6.5, while the lower part is highly acidic with a pH of 1.5−4.0. It then enters the intestine which is slightly alkaline, with a pH of 7−8.5.

Detailed explanation-4: -In the small intestine, the enzymes that “work” there need an alkaline pH in order to have optimum working conditions. A second reason is that strong acids (like hydrochloric) can end up damaging the lining of your intestine.

Detailed explanation-5: -The pH of the human small intestine is around 7.5 and the pH of the large intestine can be 5.5.

There is 1 question to complete.