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舌乳头有哪几种

更新时间: 2020-10-12 00:00:00     

舌背黏膜表面有许多小突起,称为舌乳头。可将舌乳头分为丝状乳头、菌状乳头、轮廓乳头和叶状乳头。1.丝状乳头数目最多,乳头表面有透明角化上皮细胞。上皮的浅层细胞经常有角化和剥脱现象。2.菌状乳头数目较少,分散于丝状乳头之间,有的菌状乳头的上皮内可见少数味蕾,故亦有味觉感受作用。3.轮廓乳头约l0个左右,沿界沟的前方排列成一行。在乳头的环沟侧壁上皮内,有许多染色浅淡的卵圆形小体,称味蕾,有感受味觉的功能。4.叶状乳头位于舌侧缘的后部,人类此乳头已退化为5~8条平行的皱襞。

关键词: 乳头

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