MRCP UK EXAMINATIONS

ABDOMINAL

GASTROINTESTINAL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Feces are formed due to:
A
Excess feeding.
B
Malfunction of prebiotics.
C
The part of fibers that were not fermented.
D
water absorption
Explanation: 

Detailed explanation-1: -Insoluble or Non-fermentable-“bulking”-fibers create larger, softer stools and speed the passage of waste through the digestive tract. This dilutes potential carcinogens exposed to the colon, and can help prevent or relieve constipation.

Detailed explanation-2: -Insoluble, poorly fermented fibers Small, insoluble fiber particles (e.g., finely ground wheat bran) have no laxative effect and can actually have a constipating effect by adding only to the dry stool mass (see Improving regularity in stool elimination).

Detailed explanation-3: -In the large intestine, partially digested food (chyme) from the small intestine mixes with mucus and gut bacteria to form stool or faeces. It serves as temporary storage of faecal matter; causes the urge to have a bowel movement.

Detailed explanation-4: -Dietary fibers, which are composed of both fermentable and non-fermentable fibers, have a wide range of physiological effects. Fermentable fibers are easily fermented by bacteria in the colon, while non-fermentable fiber are not.

There is 1 question to complete.