Myogenic

A myogenic muscle can naturally contract and relax.

e.g. cardiac muscle.

A myogenic muscle doesn't need to receive impulses from a nerve to make it contract.

for example:the heart muscles are myogenic in nature.when a heart is removed from a mammal and place in a well-oxygenated salt solution at 37 degrees Celsius it will continue to beat rhythmically for a considerable time,without stimuli from the nervous system or hormones.this demonstrates its myogenic nature. See also : Muscle