Published: Jan 1968
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Odor stimuli affect only a small area of yellow brown receptor cells located in the ceiling of the inner nose. This area contains millions of nerve endings of the olfactory nerves . Each nerve ending, in turn, has at its tip several fine cilia-like hairs, which are thought to contain the ultimate olfactory receptors . These hairs protrude into the mucous layer which is continuous with that lining the entire surface of the inner nose. The olfactory nerves transmit impulses to the olfactory bulb located at the front and the base of the brain. At the bulb, fibers from the nose contact other nerves which go to different parts of the brain (see Fig. 1).
Chief, Medical Research Laboratory, Research Laboratories, Edgewood Arsenal, Md.
Fritzsche Brothers, Inc., New York, N. Y.