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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

Solutions

Chapter
Section
BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

In the placenta, maternal blood is continuously pumped through the

A. Umbilical arteries

B. Chorionic villi

C. Fetal vessels

D. Intervillous space

Summary Introduction

Introduction:

The placenta consists of 15 to 20 segments called cotyledons. Each cotyledon, in turn, is made of fetal vessels, chorionic villi, and intervillous spaces. The arteries of the uterus provide blood to the placenta. Here, the blood is pumped throughout the intervillous space, and, from there, to the other parts of the fetus through the umbilical cord.

Explanation

Explanation for the correct answer:

Option (d) is, ‘intervillous space’. The placenta consists of 15 to 20 segments called cotyledons. Each cotyledon, in turn, is made of fetal vessels, chorionic villi, and intervillous spaces. The arteries of the uterus provide blood to the placenta. Here, the blood is pumped throughout the intervillous space and, from there, to the other parts of the fetus through the umbilical cord. Hence, option (d) is the correct answer.

Explanation for the incorrect answer:

Option (a) is, ‘umbilical arteries’. Umbilical arteries are found wrapped around the umbilical vein and carry the deoxygenated blood from the fetus to the placenta. So, it is an incorrect option.

Option (b) is, ‘chorionic villi’...

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