Gently turn that blobby body around, and gaze deep into its marvelous, multifunctional anus. The sea cucumber's posterior is so much more than an exit hole for digestive waste. It is also a makeshift mouth that gobbles up bits of algae ; a faux lung, latticed with tubes that exchange gas with the surrounding water ; and a weapon that, in the presence of danger, can launch a sticky, stringy web of internal organs to entangle predators. It can even, on occasion, be a home for shimmering pearlfish , which wriggle inside the bum when it billows open to breathe.
Itchy bottom causes & treatments - Illnesses & conditions | NHS inform
Anal fissures are small tears or cracks on the part of the anus that opens when you pass stools— where the inside of the anus meets the outside. They are associated with pain and bleeding during bowel movements. Most will heal on their own and do not require treatment. In adults they can be caused by passing a large, hard stool, or by having frequent diarrhea. In older adults they may occur due to decreased blood flow to the area. Having too much tension in your sphincter muscle or having anal intercourse may also cause anal fissures.
The Body’s Most Embarrassing Organ Is an Evolutionary Marvel
See more words from the same century. Accessed 21 Jul. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Top 10 Latin Phrases. Words as delightful as they are rare.
Anal pain can affect the area in or around your bottom anus or back passage rectum. Anal pain is sometimes accompanied by rectal bleeding and can be distressing. Page last reviewed: October I Next review due: October