Dilation
Dilation
If a body is heated and after heating the body if the expand in one dimension then it is called linear expansion
A pore is the duct opening that provides a pathway for fluid to leave the body.
Urethra.
atresia
The opening in called a urethra, in both males and females.
That is called the anus, the opening where fecal matter exits the body. The majority of animals have that or something similar. Birds and at least one mammal have a cloaca instead, and that is an opening for urination, defecation, mating, and laying eggs.
The outside opening of the rectum is called the anus. It is the opening where feces are expelled from the body during a bowel movement.
There called pores. There are thousands of them.
They are called the "stool".
Any passage or opening leading to the interior of the body is known as a meatus. The external opening through which urine passes out of the body is called the urinary meatus.
Solid waste leaves the body through the anus, a muscular opening at the end of the gastrointestinal tract.