Most of its functions are not under direct voluntary control.

The muscles in question are not under direct voluntary control; that's one of the reasons learning to sing isn't easy.

Also, specific learned tasks can restore voluntary control of the hand to a significant degree.

Although under voluntary control, most eye movement is accomplished without conscious effort.

Within the body, hidden from the casual eye, are organs not under voluntary control in the full sense of the word.

In adults, the decision whether or not to defecate is under voluntary control.

Young children learn voluntary control through the process of toilet training.

This puts industry off voluntary controls and it tends to wait for a law to be brought in.

She had a child's face and a compact, energetic body whose every muscle seemed to be under her voluntary control.

Having reached the age of ten or so, I had practically full voluntary control over all my powers.