A full explanation at :- http://en.wikipedia.org/wiki/Somatic_nervous_system Basically, it is the nerve system that control voluntary body movements
A nerve that is under your conscious control and stimulates skeletal muscles also controls voluntary movements, such as writing, talking, smiling or jumping
The pudendal nerve (part of the somatic nervous system, voluntary control) innervates the pelvic floor. It also innervates the external urethral sphincter; the internal urethral sphincter is innervated by the pelvic nerve (part of the parasympathetic nervous system, involuntary control).
All skeletal muscles in the body must be supplied by somatic motor nerves. These nerves carry signals from the brain to the muscles, controlling voluntary movements.
Motor neuron diseases like primary lateral sclerosis develop because the nerve cells that normally control the movement of voluntary muscles degenerate and die.
Somatic nervous system: Associated with the voluntary control of body movements via skeletal muscles Autonomic nervous system:operates independently of voluntary control, although certain events, such as emotional stress, fear, sexual excitement, and alterations in the sleep-wakefulness cycle, change the level of autonomic activity.
the neuron that controls our eye movement and it ism important
Oculomotor Nerve
Amyotrophic Lateral Sclerosis is a degenerative disease of the nerve cells (neurons) in the brain and spinal cord that control voluntary muscle movement. These voluntary muscle movements include the kind of physical movement that Stephen Hawking cant do. Neurons send messages to muscles - the lack of them means these messages are not being sent. As more messages are lost, muscles begin to weaken, twitching begins to occur, and eventually the victim is unable to move their limbs or body.
A nerve impulse that originates in the precentral gyrus of the cerebrum is responsible for initiating voluntary muscle movements. It travels along the corticospinal tract, crosses over to the opposite side of the brainstem, and descends through the spinal cord to reach the muscles that are involved in the intended movement. This process allows for precise and coordinated control of voluntary movements throughout the body.
The only unvoluntary muscle is cardiac muscle. Heart is cardiac muscle. Unvoluntary muscle does not need nerve system in order to work. It works even if we are not in concious. Voluntary muscles need nerve system to move. The coordinating centre in our brain send nerve impulses to the muscles for various movement such as running and chewing. Instances of voluntary muscles are smooth muscle and skeletal muscle.
Acetylcholine is one of many neurotransmitters. It's the primary NT of voluntary muscular movement. Myelin insulates the axons, allowing nerve impulses to be transmitted faster.