It is not necessarily held under voluntary control.
The orbicularis and levator are striated muscles under voluntary control.
The external sphincter consists of two layers of striated muscles under voluntary control.
To begin, the quality of information provided under voluntary disclosure policies is generally low.
Unlike smooth muscle and cardiac muscle, skeletal muscle is under voluntary control.
Defecation can be totally involuntary, or it may be under voluntary control.
Utilities now operate under voluntary guidelines developed by the reliability council, which in practice means no one has to comply.
The system already operates under voluntary guidelines that cover such issues as how much power can flow through a given line and how equipment should be maintained.
And it is by now undeniable that lifestyle factors under voluntary control (diet and exercise) promote the development and progression of many cancers.
Salfit, a farming town of olive groves and 12,000 people near Nablus, seemed to be under "voluntary curfew," residents said, with everyone at home watching television.
"We have a very small handful of people who work under voluntary arrangements for which they are not paid," said a Bauer spokeswoman.
