Richard Ramirez, the serial killer who terrorized Southern California in the 1980s as the Night Stalker, has died in prison while awaiting execution. Ramirez died of natural causes at Marin General Hospital. He was 53 years old. San Quentin State Prison spokesman Lt. Sam Robinson confirmed Ramirez's death Friday.
The somatic nervous system (SoNS or voluntary nervous system) is the part of the peripheral nervous system associated with skeletal muscle voluntary control of body movements. The SoNS consists of afferent nerves and efferent nerves.
Skeletal muscle is under voluntary control. Nerve impulses that originate in the central nervous system cause muscles to contract. Both neurons and muscle tissue conduct electrical current by moving ions across cellular membranes.A motor neuron ends in a synapse with a muscle fiber.erve impulses that originate in the central nervous system cause muscles to contract. Both neurons and muscle tissue conduct electrical current by moving ions across cellular membranes. A motor neuron ends in a synapse with a muscle fiber.