Define gyrus. gyrus synonyms, gyrus pronunciation, gyrus translation, English dictionary definition of gyrus. n. pl. gyÂ·ri A rounded ridge, as on the surfaces of the cerebral hemispheres. n , pl gyri another name for convolution3 n., pl. gyâ¢ri a convoluted fold of...
olfactory nerve. n. Any of numerous olfactory filaments in the olfactory portion of the nasal mucosa that enter the olfactory bulb, where they terminate in synaptic contact with mitral cells, tufted cells, and granule cells. Also called first cranial nerve.he fibers pass into the skull and form synapses with the dendrites of the mitral cells. The area in which the olfactory nerves arise is situated in the most superior part of the mucous membrane that covers the superior nasal concha.
What separates the roof of the nose from cranial cavity, and allows branches of the olfactory nerve (CN I) to enter the cranial cavity and reach the brain? Cribriform plate What separates nasal cavity into a right and a left cavity; consists of four structures: the perpendicular plate of the ethmoid bone, the vomer bone, the vomeronasal cartilages, and the septal nasal cartilage