olfactory bulb
31bulb — bulbed, adj. bulbless, adj. /bulb/, n. 1. Bot. a. a usually subterranean and often globular bud having fleshy leaves emergent at the top and a stem reduced to a flat disk, rooting from the underside, as in the onion and lily. b. a plant growing… …
32Olfactory nerve — The nerve that carries impulses for the sense of smell from the nose to the brain. The olfactory nerve is the first cranial nerve. The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which emerge from… …
33olfactory lobe — noun : a lobe of the brain that projects forward from the anterior lower part of each cerebral hemisphere, is continuous anteriorly with the olfactory nerve and well developed in most vertebrates, but is reduced to a narrow elongated body in man… …
34olfactory glomerulus — one of the small globular masses of dense neuropil in the olfactory bulb; it contains the first synapse in the olfactory pathway and the axons of olfactory cells synapse here with dendrites primarily of mitral cells and tufted cells …
35olfactory vesicle — 1. the vesicle in the embryo that later develops into the olfactory bulb and tract. 2. a bulbous expansion at the distal end of an olfactory cell, from which the olfactory hairs project …
36bulb — [[t]bʌlb[/t]] n. 1) bot a) a swollen, usu. underground stem having fleshy scalelike leaves that contain stored food, as in the onion or daffodil b) a plant growing from such a stem 2) any round, enlarged part, esp. at the end of a cylindrical… …
37olfactory nerve fiber layer — the outermost layer of the olfactory bulb, composed of axons of the olfactory cells before they terminate in the adjacent glomerular layer …
38olfactory brain — noun a center in the cerebral hemispheres that governs the sense of smell in lower animals; in humans it seems to mediate complex emotional behavior • Syn: ↑rhinencephalon • Hypernyms: ↑center, ↑centre, ↑nerve center, ↑nerve centre • Part Meronym …
39external granular layer of olfactory bulb — a thin layer between the glomerular layer and the molecular layer, containing periglomerular cells …
40molecular layer of olfactory bulb — a wide layer between the external granular layer and the mitral cell layer, primarily containing dendrites from mitral and tufted cells …
