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Answer :
Final answer:
The sensory neurons in the dorsal root ganglia convey the sensation in your fingers to your spinal cord when you touch an object. This is facilitated by the somatic nervous system, which receives environmental input and responds accordingly. Motor neurons also play a role in this process, sending signals to your muscles.
Explanation:
When you reach out for your pen and feel its shape in your hand, it's the sensory neurons in the dorsal root ganglia that are conveying the sensation in your fingers to your spinal cord. These fibers enter the spinal cord through the dorsal nerve root. This sensory information from the environment, in this case, the shape and texture of the pen, triggers an action potential, which travels along the sensory fiber through the dorsal spinal root to the spinal cord.
The somatic nervous system, which is responsible for our conscious perception of the environment and our voluntary movements, is heavily involved in this process. Its peripheral sensory neurons receive input from environmental stimuli, and the neurons that produce motor responses originate in the central nervous system.
Also involved in this neural activity are Motor neurons which have cell bodies in the ventral gray matter of the spinal cord, that project to muscles through the ventral root. These neurons are usually stimulated by interneurons within the spinal cord but are sometimes directly stimulated by sensory neurons.
Learn more about Sensory and Motor Neurons here:
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