论文部分内容阅读
一、《生理学》讲的“胎息”。胎儿心血管系统的结构和血液循环途径与出生婴儿是大不相同的:1,卵圆孔的变化。左、右心房间靠卵圆孔相通。胎儿出生前,右心房
First, the “physiology” to say “childbirth ”. Fetal cardiovascular system structure and blood circulation and newborn babies are very different: 1, foramen ovale changes. Left and right rooms by foramen interlinked. Prenatal birth, right atrium