l6l2 



HANDBOOK OF PHYSIOLOGY 



CIRCULATION II 



and Crawford (56). Within die fetal villus, the es- 

 sential vascular arrangement is one of a large plexus 

 rather than a series of simple capillary networks 

 [Crawford (56), B0e (33-35)]. 



In concluding a review of the maternal blood flow 

 in the uterus it is appropriate to note that where the 

 pregnant uterus is concerned, the fetal circulation 

 cannot properly be separated from the uterine cir- 



culation. They are a complex and in a sense a single 

 unit, one affecting the other in the developing changes 

 that take place. The conceptus affects uterine growth 

 and all that that entails, while at the same time the 

 uterus affects the development of its contents. The 

 complexity of the relationships between uterine 

 growth, vascularity, and fetal development are re- 

 viewed elsewhere in this context (203). 



REFERENCES 



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2. Ahlquist, R. P., and R. A. Woodbury. Influence of 

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3. Alvarez, H., and R. Caldevro Barcia. Fisiopatologia 

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4. Amoroso, E. C. The vascular relations in the placenta of 

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