The Ca 2+ levels, released by agonist-induced activity of phospholipase C, determine which contractile pathway is activated. In the following subsections we discuss in some detail some of the steps ...

University of Delaware’s Mona Batish is a molecular biologist. She studies circular RNAs formed as a result of so-called molecular mistakes that occur when a strand of RNA — the ribonucleic acid that ...

Panel A shows the microscopic myoarchitecture of the circular and longitudinal muscle layers of the lower esophageal sphincter and stomach. The circular muscle fibers of the esophagus cross each other ...

Muscles and nerve fibers allow a person to move their body and enable the internal organs to function. There are more than 600 muscles in the human body. People also have different types of muscle. A ...

The pelvic floor is a thin but strong sheet of muscle and connective tissue that closes off the pelvic cavity from below. It supports the pelvic organs in women, which include the urinary bladder, the ...