Development of the smooth muscle of the ureter and vesical trigone: histological investigation in human fetus.
Development of the smooth muscle of the ureter and vesical trigone: histological investigation in human fetus.
复制标题
输尿管和膀胱三角平滑肌的发育：人类胎儿的组织学研究。
作者：
M. Tacciuoli;T. Lotti;A. de Matteis;C. Laurenti
本文用连续组织切片观察了人胎儿输尿管、输尿管膀胱连接部和膀胱三角肌组织的发育。肌肉组织首先出现在输尿管的腰段，并在颅-尾方向上发生进一步的平滑肌发育。输尿管膀胱内部分的肌肉组织仅存在于22 - 24周的胎儿中。三角区肌肉组织的发育依赖于此束平滑肌的发育。
The development of the muscular tissue of the ureter, ureterovesical junction and vesical trigone in the human fetus has been investigated using serial histological sections. The muscular tissue firstly appears in the lumbar tract of the ureter and the further smooth muscle development occurs in a cranio-caudal direction. The muscular tissue in the intravesical portion of the ureter is present only in fetuses between 22 and 24 weeks. The development of the muscular tissue of the trigone is dependent upon the development of smooth muscle of this tract.