外耳道软骨部皮肤与其它部位皮肤一样，都分布有腺体和毛囊；但邻近鼓膜的骨性外耳道皮肤则没有腺体和毛囊等附器，而覆盖于鼓膜的表皮极薄，这些特点均不同于身体其它部位皮肤。有人发现外耳道内这些部位皮肤的角肝细胞移行有其特殊性，鼓膜表皮的角阮细胞呈放射状从中央向周? The external auditory meatal skin is the same as other parts of the skin, with glands and hair follicles distributed; however, the bony external auditory meatal skin adjacent to the tympanic membrane has no appendages such as glands and hair follicles, whereas the epidermis covering the tympanic membrane is extremely thin. Other parts of the body skin. Some people find that these parts of the external auditory canal in these parts of the angle of the liver cell migration has its own particularity, the eardrum of the epiretinal cell radial radial from the central to the week?