The human anus from Latin anus meaning "ring", "circle"   is the external opening of the rectum. Two sphincters control the exit of feces from the body during an act of defecation , which is the primary function of the anus. These are the internal anal sphincter and the external anal sphincter , which are circular muscles that normally maintain constriction of the orifice and which relaxes as required by normal physiological functioning. The inner sphincter is involuntary and the outer is voluntary. It is located behind the perineum which is located behind the vagina or scrotum.
So, This Is Why We Have Butt Hair?
Fascinating Health Benefits Of Butt Hair
Humans have hair all around the body that serve different purposes. The hair on our head is said to offer heat insulation and cooling properties; as well as protection from ultra-violet rays. The hair on our eyebrows and eyelashes is argued to prevent dust and particles from entering into our eyes. However, little is known about what purpose does anus hair serve. Many men and women decide to get rid of the hair on the body including their arms, legs and even genitals often forgetting about the anus hair. For believers of the evolution theory , humans have evolved from animals and thus come from other primates.
11 Parts Of Your Body Where Having Hair Is Totally Normal
In reality, women are just as gross as men when it comes to bodily functions: we burp, we fart, and we poop. And surprise, surprise, we have body hair! Most women have some sort of butt hair. It may be thin and peach-fuzz-like, or it may be thicker and more coarse, like pubic hair. Having darker, longer, and thicker hair between your butt cheeks is also totally normal.
Grooming our body hair can be comparable to landscaping. In the process, we come across an unsightly view — butt hair. It may just be a side effect of unintelligent design.