Question

The exit of unabsorbed food material is regulated by
a) Liver
b) Anus
c) Small intestine
d) Anal sphincter

Answer 1

The rectum is the part of the large intestine where waste has been stored and when the signal comes from the brain it will become empty through the anus. Through the process of excretion, we discharged the harmful substances from our bodies. An anal sphincter is a group of muscles present at the end of the rectum and it helps in the discharging of waste from our body.

Complete answer:
a. Liver: is the largest gland of our body and it weighs about 1.2kg-1.5kg in an adult human. The liver is situated in the abdominal cavity, below the diaphragm, and consists of two lobes: the left lobe and the right lobe.
b. Anus: is the opening where the GIT ends and exits the body. Anus Latin meaning is ‘circle’ since it encircles the outlet of the bowel. It starts from the colon of the large intestine and ends in the rectum of the large intestine.
c. Small intestine: It is actually the part of the GIT where most digestion occurs and it is also the largest part of the GIT. Here the absorption of food occurs through the small finger-like structures called villi.
d. Anal sphincter: is the group of muscles at the end of the rectum that surrounds the anus and controls the release of fecal matter. Therefore, there are two sphincter muscles: Internal and External.

So, the correct answer is “Option d”.

Note:
Actually the External muscle helps in maintaining continence and keep stool In the rectum but with aging, it becomes loose and disrupted. We also have to drink plenty of water because it helps in the absorption of food. We always need to drink about 3.7 liters of water a day.