縦筋層(直腸の)Longitudinal muscle layer of rectum(Stratum longitudinale tunicae muscularis recti)
縦筋層(直腸の)【じゅうきんそう(ちょくちょうの)】 Layer of longitudinal muscle cells that are evenly distributed over the entire circumference of the rectum.(直腸の縦筋層は全周に一様に分布する縦走筋層。)