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.
Each cranial nerve has specific sensory or motor functions. Allergies can diminish the olfactory nerve's affectiveness. The olfactory nerve extends from the olfactory bulb to the olfactory epithelium, the area of the nose which actually intercepts scents. People have two olfactory nerves, one on either side of the face.The work performed by olfactory nerves is diminished during times of illness.View slideshow of images above.ach cranial nerve has specific sensory or motor functions. Allergies can diminish the olfactory nerve's affectiveness. The olfactory nerve extends from the olfactory bulb to the olfactory epithelium, the area of the nose which actually intercepts scents. People have two olfactory nerves, one on either side of the face.