You cannot consciously control your stomach muscles because they are primarily involuntary muscles, meaning they function automatically without your conscious effort. These muscles, including the smooth muscles of the digestive tract, are regulated by the autonomic nervous system, which manages bodily functions such as digestion and heart rate. While you can engage your abdominal muscles for specific movements, like contracting during exercise, their overall function is largely automatic and influenced by physiological needs rather than conscious control.
You cannot control the muscles in your heart and brain, and also your lungs, because they work automatically.
involuntary muscles. Stomach, intestines and your heart are examples.
sphincter
Those are not under our control
Voluntary muscles are muscles that you control.
we canot control that muscles
Voluntary muscles are the ones you can control with your mind and the involuntary ones you cannot control, they do their jobs automantically.
Your involuntary muscles are muscles like your smooth muscle (stomach) and your cardiac muscle (heart), which are under autonomic control. Your skeletal muscles are the muscles which are voluntary since you have complete control over them! :]
Stomach muscles
The function of the blood tissue in the stomach is to mainly control the processes in the stomach. This includes regulating acid production and coordination of the stomach muscles among others.
Voluntary
You can't control involuntary muscles but you can control voluntary muscles.