Nature and Uses of Primary Data Sources Page 1 of 14 ______________________________________________________________________.
cranial nerve - any of the 12 paired nerves that originate in the brain stem. 1  nerve, nervus - any bundle of nerve fibers running to various organs and tissues of the body. 2  first cranial nerve, nervii olfactorii, olfactory nerve - a collective term for numerous olfactory filaments in the nasal mucosa.
Noun. 1. foramen magnum-the large opening at the base of the cranium through which the spinal cord passes. braincase, brainpan, cranium-the part of the skull that encloses the brain. foramen, hiatus-a natural opening or perforation through a bone or a membranous structure.1  Facebook.he large orifice in the base of the skull through which the spinal cord passes to the cranial cavity and becomes continuous with the medulla oblongata.