Akademik

1. a muscle that contracts without conscious control and found in walls of internal organs such as stomach and intestine and bladder and blood vessels (excluding the heart)

2. muscle tissue that does not appear striated under the microscope; has the form of thin layers or sheets

ˌsmooth ˈmuscle 7 [smooth muscle] noun uncountable (anatomy)

the type of muscle found in the organs inside the body, that is not under conscious control