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胸腺是人类和其他哺乳动物机体免疫器官之一,它是一个中枢淋巴器官,在免疫应答的个体发生中占很重要地位。是孩童早期发育最高的无管腺体,此腺体呈灰红色,常分二瓣叶联合而跨跃中平西。人类的胸腺发生于胚胎期第六周。出生时已达15g左右,出生后继续生长,至青春期可达30g以上,此后胸腺开始萎缩。Tosi等用电子计算机计算了胸腺皮质的体积与年龄关系,结果表明人类在15岁以后胸腺皮质的体积与年龄呈负指数函数关系。这个函数分为两
Thymus is one of the immune organs of human and other mammals. It is a central lymphoid organ and plays an important role in the development of individuals with immune response. Early childhood development is the highest tubeless glands, the gland is gray-red, often divided into two leaves and leap in the mid-level. Human thymus occurs in the sixth week of the embryo. Birth has reached about 15g, continue to grow after birth, up to 30g above puberty, thymus began to shrink after. Tosi et al. Calculated the relationship between thymus cortex volume and age by computer. The results showed that the volume of thymus cortex in human after 15 years old had a negative exponential function. This function is divided into two