The anus only refers to the anal opening. There is a sphincter that keeps the anus closed. The canal is the rectum, a tube-like structure that holds feces or bowel movements until a person visits the bathroom.
The anal canal
The anal canal has a ring of muscle, called the anal sphincter
The posterior portion of the perineum is called the anal triangle. It contains the anus and associated structures, such as the anal sphincters and anal canal.
anal canal
The terminal portion of the large intestine forms the anal canal, which is the last part of the digestive tract before the anus. The anal canal begins at the anorectal junction and ends at the anal verge.
The anal canal serves to transmit and lubricate stool as it passes externally from the rectum
The anal rectal ridge, also known as the anorectal junction, is located at the boundary between the rectum and the anal canal. It marks the transition area where the rectal mucosa changes to the stratified squamous epithelium of the anal canal. This ridge plays a role in the anatomy and function of the anal sphincter and is important for maintaining continence.
The membrane lining of the anus is called the anal mucosa. It is a thin, moist layer of tissue that helps protect the anal canal and plays a role in the process of defecation.
An anoscopy is an examination using a small, rigid instrument called an anoscope, which is inserted into the anal canal.
Anoscopy is the visual examination of the anal canal and lower rectum.Anoscopyits actually proctoscopy
Assholicus Maximus & Buttockical Minimus
anal canal