All the cranial nerve nuclei, except that of the trochlear nerve (CN IV) supply nerves of the same side of the body. Lesions occurring in any one of the nuclei resemble the severing of the nerve theyâre associated with. Nerves CN I-V. The olfactory nerve is the first cranial nerve (CN I). It is purely sensory and is responsible for smell.
Related Terms. Also called point of demarcation (POD), demarc extension, or demarc, it is the physical point at which the public network of a telecommunications company (i.e., a phone or cable company) ends and the private network of a customer begins - this is usually where the cable physically enters a building.
How to check your Demarc. The Demarc (abbreviation for demarcation point) is the gray box on the outside of your house where the phone line(s) connect to the wiring that is inside the house. When you're having phone troubles such as no dial-tone, or noises such as static, you can determine where the problem might be coming from yourself by checking your demarc.