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睾丸支持细胞即Sertoli细胞的立体构型比较复杂,在形态上呈不规则锥体形,基部紧贴基膜,顶部伸达管腔,侧面和腔面有许多不规则凹陷,内镶嵌着生精细胞并为其提供结构上的支持与定位。睾丸支持细胞之间通过紧密连接形成的血睾屏障(blood-testis barrier,BTB)将生精上皮分为基底室和近腔室,处于细线期和细线前期的精母细胞必须从生精上皮的基底小室进入近腔小室,这样形态上发育完全的精子才能在精子释放时进入到生精小管的内腔,BTB适时的开闭对精子的发生有至关重要的作用。精子的发生
Sertoli cells, the supporting cells of the testis, have more complex stereoconfigurations, irregularly pyramidal shape in shape, close to the basement membrane at the base, reaching the lumen at the top, many irregular depressions on the side and the cavity surface, and embedded with germ cells And provide them with structural support and orientation. Testicular epithelium is divided into basal and proximal compartments by the blood-testis barrier (BTB) formed by tight junctions between the supporting cells of the testis. The spermatocytes in the slender and pre-thin sections must be removed from the spermatogenic cells Epithelial basal cells into the proximal chamber, so that the morphology of the development of complete sperm can be released into the seminiferous tubule in the lumen, BTB timely opening and closing spermatogenesis is crucial. Sperm happened