. The human body and health : an elementary text-book of essential anatomy, applied physiology and practical hygiene for schools . y senseorgans of temperature or pressure, and therefore themovement of the food is not felt except when sicknessmakes the end organs of pain more sensitive. The se7ise of pain has separate nerves with their organsof sense widely dis-tributed throughoutthe body. This senseis of great service intelling an individualwhen any of theorgans are sick orare being or an ap-plication of cocainenumbs the senseorgans of pain and isoften used in opera-tions by
. The human body and health : an elementary text-book of essential anatomy, applied physiology and practical hygiene for schools . y senseorgans of temperature or pressure, and therefore themovement of the food is not felt except when sicknessmakes the end organs of pain more sensitive. The se7ise of pain has separate nerves with their organsof sense widely dis-tributed throughoutthe body. This senseis of great service intelling an individualwhen any of theorgans are sick orare being or an ap-plication of cocainenumbs the senseorgans of pain and isoften used in opera-tions by the surgeon. The Sense of Smell.— The sense organsof smell are locatedin the mucous mem-brane lining the upper part of the cavity of the consist of hundreds of long columnar cells, each ofwhich bears on its outer end from six to eight hairlikeprocesses. Particles of matter in the form of gas,striking these processes, send a stimulus by the olfactorynerves to the brain, producing the sensation of smell. A cold excites a secretion of mucus in the nose so aspartly to cover the organs of smell, and also results in an. Fig. 155. — Section through the nose, a, dis-tribution of the nerve of smell connectedwith ol, the olfactory lobe lying beneath thefore part of the brain. 240 THE SENSE ORGANS inflammation of the membrane bearing them, so that theyare not able to act. During a cold many foods seem tohave little taste, because it is the odor rather than thetaste that gives the desired quality to some pleasure from eating onions, coffee, and cheese will be greatly lessenedif one holds hisnostrils shut. The Sense ofTaste. — The endorgans for tasteoccur in the mucousmembrane of thetongue, soft palate,and other regions ofthe throat. Theyare minute ovalbodies, called tastebuds, each of whichis connected with anerve fiber extend-ing to the taste buds are most abundant in the dozen or lesscircumvallate papillce, at the back of the tongue, and inthe fungi
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