中国水牛Bubalus bubalis皮肤的微细结构

作者选用9例中国水牛,每例水牛各取19个不同部位的正常皮肤制成切片,加以显微观察。结果表明:1.表皮分角质层、颗粒层、棘层和基底层,缺透明层。明显的乳头间屏环绕真皮乳头,从而大大增如了与真皮间的接触面积。真皮可分乳头层和网状层,但两者间的界线不甚明显。2.只存在一种顶浆分泌型汗腺,在不同切片上可观察到不同分泌周期汗腺分泌部的变化。汗腺的血管分布较少,对体温调节作用不是主要的。3.皮脂腺是全浆分泌型,较发达,一般分2～3叶围绕毛囊,毛细血管分布较多,分泌水平较高。4.真皮部位血管分布丰富,真皮乳头内有丰富的毛细血管网,有利于体热发散。

THE HISTOLOGICAL SKIN STRUCTURE OF WATER BUFFALO,BUBALUS BUBALIS

This research is concerned at the histological structure of the skin of water buffalo,Bubalus bubalis.Nineteen samples of each animal from 9 buffaloes have been examined。 1.The epidermis is composed of the stratum corneum,stratum granu- losum,stratum spinosum and stratum basale.But it does not contain st- ratum lucidum.The papillomatous epidermis is quite distinct,and located around the papillary layer of the dermis,expanding futher to the junction area between the epidermis and the dermis.The dermis is divided into a superficial papillary layer and a deep reticular layer,but the demarcation line between them is not clear. 2.The sebaceous glands release their products by the holocrine mode. They are well-developed,generally with 2-3 lobules,and frequently ass- ociated with the hair follicles.The sebaceous glands are rich in capil- laries. 3.There is only one single type of sweat gland,i.e.,the apocrine type,found in the skin of water buffalo.We can easily observe the chara- cteristics of the different stages of the secretory activity through the various sections of the gland.The blood vessels attached to the sweat gland are comparactively more.However,the sweat gland is not very significant in the regulation of the body temperature. 4.The dermis is rich in capillaries scattering inside the papillae, and such histological make up is of advantage to the body heat loss.