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.
Even defined, it can be difficult to discern the need of this point; however, the Demarc has a number of applications in its use. The Demarcation Point has user accessible jacks that connect to telephone networks, as well as small loops of telephone cords that connect to jacks by modular connectors.