pectorals, biceps, triceps
Muscles are stimulated by signals from nerve cells called motor neurons
wwe says it is 240 but it is probably less
muscle fibers contract the muscles when stimulated.
The diaphragm is stimulated the same way all other muscles are - nerve impulses that originate in the brain (or sometimes the spinal cord). The intercostal muscles expand during inhalation and contract during exhalation in response to the movement of the lungs by the diaphragm.
Get a trainer at the local gym and start working out to build up chest muscle and tone.
The role of muscles in our body is enabling us to move our body, whn stimulated by a nerve. Muscles can contract as your brain tells them to. With out our muscles we would not be able to make any movements.
Generally, voluntary muscles are striated and skeletal muscles, while involuntary muscles are smooth muscles and are visceral (located in organs). Voluntary muscles are muscles that can be consciously contracted, while involuntary muscles are muscles that are contracted at certain times or at all times without the conscious consent of the brain.
soleus
Think about it. If you have muscles in your butt than they can be stimulated for growth. Yes.
Skeletal muscles are stimulated by nerve impulses which relay, beginning with sensory neurons at the site of excitation and ending with the motor neuron appropriate to the muscle being used. For example, the palmaris longus, responsible for flexion in the wrist joint, is stimulated by the median nerve, or nervus medianus. There is certainly a lot more complexity to this and should therefore be answered in an equally more complex question.
No
When a person is performing intense physical exercise and begins to feel fatigue and a burning pain in the muscles the response of the muscles is to synthesize more lactate or lactic acid.