Final answer:
The Nervus Intermedius, part of CNVII (Facial Nerve), functions as Both Sensory and Motor. It conveys sensory information like taste and controls motor functions such as facial movements and salivation.
Step-by-step explanation:
The GSA modality of the Nervus Intermedius, part of the Facial Nerve (CNVII), is Both Sensory and Motor. This cranial nerve is one of the nerves that have both sensory ganglia, responsible for conveying sensory information such as taste to the brain, and motor neurons that target skeletal muscles for facial expressions, and other head and neck movements. The facial nerve assists in gustatory sensations (a special sense) and motor functions including the control of the salivary glands.
Cranial nerves are classified based on their function: strictly sensory, strictly motor, or a combination of the two. The spinal nerves, in comparison, contain both sensory and motor fibers and are involved in the stimulus-response motor pathway which is the route taken by signals from sensory receptors to the central nervous system and back to the skeletal muscles.