Osman A H, Berg R
Anat Anz. 1982;151(4):375-9.
In the fetus with 9 cm CRL the ventricular groove was made up of two lips and a floor. The mucosa consisted of a Lamina epithelialis and a Lamina propria mucosae. The basal zone of the Lamina epithelialis was uneven in the floor of the groove and showed wedge-shaped evaginations into the superficial one. The luminal surface of the Lamina epithelialis of the floor became undulant in the fetus with 27 cm CRL. The Lamina muscularis mucosae became evident in the fetus with 73 cm CRL. In this fetal stage the Lamina epithelialis of the floor became differentiated into the Strata basale, spinosum, granulosum and corneum.
在头臀长9厘米的胎儿中，心室沟由两个唇和一个底部组成。黏膜由上皮层和固有黏膜层组成。上皮层的基底部在沟的底部不平，向浅层呈楔形突起。在头臀长27厘米的胎儿中，沟底部上皮层的腔面变得起伏不平。黏膜肌层在头臀长73厘米的胎儿中变得明显。在这个胎儿阶段，沟底部的上皮层分化为基底层、棘层、颗粒层和角质层。
