A treatise on the science and practice of midwifery . a. Terminal villus of fcetal tuft, minutely injected. 6. Its nucleated nonvascular sheath. (AfterF arre.) may possibly absorb nutrient material from the mothers blood, andthrow it into the foetal vascular system. The existence of lymphatics, Fig. Diagram representing a Vertical Bectlonof the Placenta. (After Dalton |a,ri. Chorion, b, h. Decldoa. c,c,c,c. Orlflcet of nterlne slnntea. ot nerves, in the placenta, however, bas never been demonstrated,and they arc believed nol to exist. 1 The Gravid Uterus, p. 52. 104 PREGNANCY. Maternal Po
A treatise on the science and practice of midwifery . a. Terminal villus of fcetal tuft, minutely injected. 6. Its nucleated nonvascular sheath. (AfterF arre.) may possibly absorb nutrient material from the mothers blood, andthrow it into the foetal vascular system. The existence of lymphatics, Fig. Diagram representing a Vertical Bectlonof the Placenta. (After Dalton |a,ri. Chorion, b, h. Decldoa. c,c,c,c. Orlflcet of nterlne slnntea. ot nerves, in the placenta, however, bas never been demonstrated,and they arc believed nol to exist. 1 The Gravid Uterus, p. 52. 104 PREGNANCY. Maternal Portion of the Placenta.—As generally described, thematernal portion of the placenta consists of large cavities, or of asingle large cavity, which contain the maternal blood, and into whichthe villi of the chorion penetrate (Fig. 57). Into this maternal partof the viscns the curling arteries of the uterus pour their blood,which is collected from it by the uterine sinuses. The villi of thechorion, therefore, are suspended in a sac filled with maternal blood,which penetrates freely between them, and with which they arebrought into very intimate contact. Dr. John Eeid believed thatonly the delicate internal lining of the maternal vessels entered thesubstance of the placenta, to form the sac just spo
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Keywords: ., bookcentury1800, bookdecade1870, bookidtre, booksubjectobstetrics
