All muscles of the peripheral skeleton are skeletal striated muscles, which are all under the somatic nervous system control which means that they're all voluntarily controlled . That being said, those muscles are obvously involved in reflexes that are involuntary and instantaneous movements .
voluntary
The quadricepts (a group of four) are voluntary muscles that extend the leg at the knee.
You have control over the muscles in the body parts where you feel you can move. For example, you have control over your leg muscles because you can move your leg using your muscles in it. You have no control over involuntary muscles like the heart and intestines.
involuntary muscles can't control consciously, but voluntary muscles can.
skeletal muscles are voluntary muscles.
The structure of the leg muscle is similar to the heart muscle in their makeup. There are studies that have shown that leg muscles can be injected into the heart.
Smooth muscles are involuntary, as are cardiac muscles. Only skeletal muscles are voluntary.
Heart muscles are involuntary.
voluntary, you control what it does.
The brainstem controls the involuntary muscles and the cerebellum controls the voluntary muscles.
Voluntary
Voluntary muscles are what you have control over. Like your skeletal muscle are usually voluntary. Involuntary muscles are what you have no control of. Like your smooth and cardiac muscles you have no control of. The difference between voluntary and involuntary muscles are voluntary muscles you have control of and involuntary you have no control of. Hope this answered your question.
They are involuntary muscles.