Respuesta :
Moving peripherally from the spinal cord the anterior and posterior roots form the spinal nerve.
The spinal cord is a long, thin, tubular structure made of nervous tissue that extends from the brainstem's medulla oblongata to the lumbar region of the vertebral column (backbone). The backbone protects the spinal cord's central canal, which contains cerebrospinal fluid. The central nervous system is made up of the brain and spinal cord (CNS). In humans, the spinal cord begins at the occipital bone and travels through the foramen magnum before entering the spinal canal at the first cervical vertebrae. The spinal cord is terminated between the first and second lumbar vertebrae.
The spinal cord's primary function is to transmit nerve signals from the motor cortex to the body and from sensory neurons' afferent fibers to the sensory cortex. It is also a center for coordinating many reflexes and contains reflex arcs that can control reflexes independently. It also houses groups of spinal interneurons that form the neural circuits known as central pattern generators. These circuits are in charge of controlling motor commands for rhythmic movements like walking.
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