Cephalization, the clustering of neurons and interneurons in the anterior part of the animal, is apparent in mammals and Planaria.
Sensory neurons transport signals from the periphery of your body to the central nervous system. Motor neurons (motoneurons) transport signals from the central nervous system to the body's outer layers (muscles, skin, and glands). Interneurons are the connections between neurons in the brain and spinal cord.
Interneurons serve as a "go-between" for afferent, or sensory, neurons that receive signals from the peripheral nervous system and efferent, or motor, neurons that transmit signals from the brain. It also communicates with other interneurons through its connections.
Interneuron damage can impair the brain's ability to communicate with muscles and organs, resulting in loss of motor function, sensory function, or both. Damage to the peripheral nerves can also cause peripheral neuropathy, which is a general term for nerve malfunction.
Therefore, the correct answer is option C. I and III
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