Nerves that connect to the anus
Jun 29, Author:
Anal Canal Anatomy: Gross Anatomy, Tissue, Nerves, and Muscles, Pathophysiologic Variants
Internal anal sphincter - an overview
The internal anal sphincter is a circular smooth muscle layer under involuntary control and is mainly contracted in rest.
Chapter The rectum and anal canal
Nervous System Control Of Your Bowel - SpinalHub
The final segment of the rectum, the ampulla , relaxes to accumulate and temporarily store faeces until defecation occurs. It is continuous with the anal canal; which passes through the pelvic floor to end as the anus.
At the level of the middle of the sacrum, the sigmoid colon loses its mesentery and gradually becomes the rectum, which, at the upper limit of the pelvic diaphragm, ends in the anal canal fig. The rectum, about 15 cm long, widens below as the ampulla, which is very distensible.
Anal nerves, inferior
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Your gastrointestinal tract is controlled by your autonomic nervous system with sympathetic and parasympathetic nerves working in harmony.