HUMAN NUTRITION

NUTRITION

DIGESTIVE SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The small intestine in highly folded to ____
A
increase the surface area of absorption
B
decrease the surface area of absorption
C
digest more food.
D
None of the above
Explanation: 

Detailed explanation-1: -The lining of the small intestinal mucosa is very highly specialized for maximizing digestion and absorption of nutrients. The lining is highly folded to form microscopic finger-like projections called villi which increase the surface area to help with absorption.

Detailed explanation-2: -The inner surface of the mucosa has many finger-like projections called villi. The villi increase the surface area of the small intestine, which helps it absorb digested food.

Detailed explanation-3: -Lining the small intestine are villi. Villi increase the surface area of the small intestine allowing more nutrients from the lumen to be absorbed in the circulatory system.

Detailed explanation-4: -The digestive and absorption capacities of the small intestine are greatly enhanced by circular folds and fingerlike projections of the intestinal mucosa called microvilli.

Detailed explanation-5: -The small intestine is divided into three, they are duodenum, jejunum and ileum. The inner walls of the ileum are covered with numerous small finger-like projections known as villi which provide a larger surface area for the absorption of digested food.

There is 1 question to complete.