Which statement explains the difference between a nerve that is connected to the skin and a nerve that is connected to a muscle?
The nerve that is connected to skin is a motor neuron; the nerve that is connected to a muscle is a sensory neuron. 

The nerve that is connected to skin receives stimuli information from the external environment; the nerve that is connected to a muscle receives processed stimuli information from the brain.

The nerve that is connected to skin is part of the central nervous system; the nerve that is connected to a muscle is part of the peripheral nervous system. The nerve that is connected to skin helps the body maintain homeostasis; the nerve that is connected to a muscle supports the body so it can stand upright.

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SJ2006
The nerve that is connected to skin receives stimuli information from the external environment; the nerve that is connected to a muscle receives processed stimuli information from the brain. 

The right answer is B. (the second one).

Sensory information is detected by peripheral sensory receptors (such as those at the skin) and is transmitted to the central nervous system via sensory neurons, otherwise known as afferent fibers.

The motor nerves carry motor control from the central nervous system to the effectors that are mainly the muscles. These efferent nerve fibers originate in the central nervous system.