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Hello students, the normal path of general sensory information such as touch, temperature, pain and proprioception from the receptor to the primary somatosensory cortex also known as the primary somesthetic gyrus in the brain involves several interconnection structures and we will discuss step by step.
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Here the first step is receptor activation.
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The process begins when sensory receptor in the skin, muscle and joints and other tissues detect stimuli such as touch, pressure, temperature or pain.
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These are the receptors specialized cells that convert the physical stimuli into the electrical signals.
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It is also known as action potential and the second step is the sensory neurons.
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Once the receptors are activated, the electrical signals are transmitted through the sensory neurons.
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It is also called as a primary afferent neurons or the first -order neurons.
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These neurons have their cell bodies located in the sensory ganglia outside the central nervous system that is cns and the third step is a dorsal root ganglion.
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The sensory neuron carrying the information from the body travel towards the central nervous system and pass through the cluster of cell bodies called as a dorsal root ganglion that is drg.
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This drg is located along the dorsal root of the spinal nerves and the fourth step is a spinal cord entry.
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After passing through the drg, sensory neurons enter spinal cord through the dorsal root...