This depends on what sphnicter muscle you are talking about, because there is more than one sphincter muscle in a cow.
A sphincter is basically a hatch keeping stuff in and other stuff out of an organ such as the stomach. The pylorus is the muscle keeping the exit of the stomach shut, or opening it so that half-digested food may enter the duodenum to be digested further. The muscle ensures food can stay in the stomach long enough, and not flow right on through without being modified long enough by the stomach acids and digestive enzymes. It also regulates the amount of stuff that goes through.
The pyloric sphincter
Vicodin did cause soasms in my sphincter of oddi - all day long - torture
How long is an cows intestine It can be nearly four times the size of the human intestine.
Cows can breed for as long as they are productive, which can range from one to 15 years or more.
Milking cows with machines have nothing to do with emaciation or weight loss. Dairy cows are naturally thin because their bodies have been genetically modified, by man, to put more effort into producing milk than putting muscle or fat on. So no matter how much these cows are fed (and they eat a lot every day anyway), they will still remain thin.
A long flat muscle is characterized as a flat muscle.
Cows don't have tongs, so why bother asking?
it means that no matter what stimulus is applied the cardiac muscle will not be able to contract
Cows have existed for maybe a little over 5000 years.
Cows will eat long grass. Haven't you ever heard, "The cow's in the corn?" Corn is a tall grass.
12 inches