The largest oil spill to occur in the United States so far was the Exxon Valdez spill into Prince William Sound, Alaska, in March 1989. The Exxon Valdez, a medium-sized oil tanker, ran aground on a reef to cause this spill of almost 11 million gallons of crude oil.
Sphincters, composed of skeletal muscles, regulate movement through our digestive and urinary systems, thus, controlling swallowing, defecation and even urination. Skeletal muscle contraction generates heat, which helps to maintain body temperature.
Your sphincter of Oddi (SO) is something that you would never give a thought to - unless it was acting up. Your SO is a muscular valve that regulates secretions from your gallbladder and your pancreas into your small intestine. When this valve is not working as it should, sphincter of Oddi dysfunction (SOD) is diagnosed. SOD is a rare health condition. In SOD, the sphincter muscle spasms, causing it to remain shut. This can result in a backup of bile and pancreatic enzymes into their respective ducts.