What is the nervous path?
The neural path connects regions in the brain to each other or transfers information from the peripheral nervous system to the brain. Two main classes of the nerve roads transmit a sensation to the brain or transmit signals to move into the body. Both consist of long insulated nerve fibers that communicate with electrically or chemical neurotransmitter. Spinal reflective paths are local paths that provide rapid responses to sudden stimuli without feedback from the brain.
The long nervous axons that make up the nervous path are called white matter due to their insulating substance, myelin. This insulation improves the speed of electric lines to cover axons in the body. In the brain, local connections may be connected between non -perellated neuronal cells called gray matter. Some nervous paths are in fact distinct fibers that serve different functions, such as Corpus Callosum, which combines many areas of the right and left semi -sizes.
Some reflective paths work without a brain. In the reflex of the kneeA-Jerk, a sensory neuron coming from the knee synapses with a motor neuron in the spinal cord, causing the muscles to download in one leg and the same muscle to relax in the opposite leg. The process happens faster than it would be if the brain was mediated. More complex nerve pathways are not really reflective, but instead receive feedback from higher areas of the brain, such as the cortex. This slows down the peace that the signals pass through them.
The sensory nervous path of relay feeling from the body to the brain, while the motor tracks carry instructions from the brain to the muscles that control voluntary movement. One of the motor nerve paths is corticospinal or pyramidal tract. The pyramidal tract, which runs from the engine area of the cortex to the spinal cord, which every movement of control on the half of the body. The corticobulbar tract relieves the voluntary movement of the facial muscles and leads from the bark to the cores of the brain stem that controls lEbeic nerves of the face. The path of the fasculus of the arch is connected by neurons that process speech recognition with those that are needed to imitate sounds vocally.
In the brain, some ways work through a specific chemical messenger called a neurotransmitter. For example, dopamine is used in many ways to perform motivation, reward and control of fine engines, among many other features. Dopamine is a neurotransmitter of the mesocortical nerve pathway that modulates the behavior of remuneration from the middle brain to the front lobes of the cortex. Since the nigrostriatal path based on dopamine helps gentle movements, it is often ill in movement disorders such as Parkinson's disease.