Final answer:
The Nervus Intermedius of CN7 or the facial nerve has three modalities: motor, sensory, and autonomic, which control facial expressions, convey taste sensations, and provide innervation to certain glands, respectively.
Step-by-step explanation:
The three modalities of the Nervus Intermedius of CN7, also known as the facial nerve, include motor, sensory, and autonomic components. The motor fibers are responsible for the facial expressions by controlling muscles of the face. The sensory fibers convey taste sensations from the anterior two-thirds of the tongue. The autonomic fibers provide innervation to the lacrimal, nasal, and palatine glands, assisting in saliva production and tear secretion. This reflects the complex nature of the facial nerve, as it performs a variety of functions that are essential for everyday activities such as eating, speaking, and facial expressions.