BuyFindarrow_forward

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 fetal circulation, once blood enters the right atrium, most of the blood enters the left atrium by passing through the

A. Ductus arteriosus

B. Ductus venosus

C. Pulmonary arteries

D. Foramen ovale

Summary Introduction

Introduction:

The umbilical cord is the conduit that connects the fetus to the mother. The umbilical vein carries the blood (oxygenated) to the fetus from the placenta. The umbilical vein then enters the fetus through the navel and ascends to the liver, where half the volume of blood enters. The rest of the blood flows to enter the inferior venecava through the ductus venosus. The blood from then flows into the right atrium where it mixes with the blood, which is deoxygenated flowing from the superior vencava. Further, from the right atrium, most of the blood flows into the left atrium through the foramen ovale.

Explanation

Explanation for the correct answer:

Option (d) is, ‘in the fetal circulation, once blood enters the heart’s right atrium, most of the blood moves to the left atrium by passing through the foramen ovale.’ Blood flows into the right atrium where it mixes with the deoxygenated blood from the superior vencava. From here, the blood flows into the left atrium through the foramen ovale. Hence, option (d) is the correct answer.

Explanation for the incorrect answer:

Option (a) is, ‘ductus arteriosus’. The blood from the right atrium flows into the right ventricle and is pumped into the pulmonary artery...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Blood carries nutrients absorbed from food a. from the intestine to the liver. b. from the lungs to the extremi...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)