It is involuntary because you cannot control it; meaning that you cannot volunteer it to move like moving your arm. Please give me a trust point, thanks.
Your hands have voluntary muscles and your heart is an involuntary muscle.
Heart muscles are involuntary.
No, the heart is an involuntary muscle. You can affect your heart rate through your nervous system but you cannot contract and relax at will your heart muscle as you would your bicep or other voluntary muscle.
The heart is involuntary because you cannot control what your heart does.
your heart beating
skeletal muscles are voluntary muscles.
If such things were voluntary we would not exist.
to live because without them you would die because your heart is a voluntary muscle
eye lids' heart
heart
the action of the one which is under the control of the will; all the striated muscles, except the heart, are voluntary muscles.
Skeletal muscles are voluntary muscles. By contrast, you cannot voluntarily move your heart muscle.