Main Functions of The Anus in Digestive and Excretory System with Details

Anus Functions in Detail:

Seemingly, there is just one anus function – an opening for defection. In fact, it performs various other functions as well. Some of the major anus functions are listed here.

Did you ever imagine the repercussions of holding the digestive wastes in the body for just a month? Apart from excretion, the anus also has a close association with sexuality. The knowledge of anal anatomy makes it easy for you to understand the anus function in reproduction.

The following information will be very useful.

An Aperture for Defecation

The primary anus function is to serve as an aperture for defecation. After defecation, the colon and rectum prepare themselves to receive and store the digestive wastes descending along the alimentary canal.

Regulation of Excretion

The internal and external sphincters play a key role in the regulation of excretory process. The internal involuntary sphincter operates under the command of autonomous nervous system. On the other hand, you can deliberately open or forcefully contract the external sphincter.F

Voluntary Control over Stools

Holding feces back for a certain duration is a very important anus function. Otherwise, you won’t be able to hold the bowels for some time in order to reach the place of defecation.

Triggering Need for Removal of Feces

The capacity of rectal storage and sensation of waste products arriving in the region inspire the need for their removal. Consequently, you feel the desire to defecate and move to a suitable place.

Sexual Arousal

The anus is to do something with sexuality. There is a high concentration of nerve endings in the anal region. These nerve endings can play a role in sexual arousal. Role in sexuality is a secondary anus function. It happens so due to the proximity of the anus with the sensitive parts of male and female genitals.

Conducting Scents

Did you know? Your anus also helps conduct scents. Conducting scents is no more considered a useful function of the anus. However, humans had been relying upon this function of the organ for reproductive purposes in the distant past.