Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Question
Chapter 39.4, Problem 1BC
Summary Introduction
To write:
The circulation through the placenta like that of pulmonary circulation.
Introduction:
The flow of blood in the unborn baby is such that oxygen and nutrients flow from the mother’s blood through the placenta to the fetus through the umbilical cord. The blood is enriched with nutrients and blood flows through the umbilical vein that transmits toa baby’s liver.
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Chapter 39 Solutions
Principles of Biology
Ch. 39.1 - Choose the correct statement. The majority of...Ch. 39.2 - In _________ gametes are released in large numbers...Ch. 39.2 - In which way is gametogenesis similar in males and...Ch. 39.3 - Prob. 1CCCh. 39.3 - Prob. 1TYKCh. 39.3 - Prob. 2TYKCh. 39.4 - Prob. 1BCCh. 39.4 - Prob. 2BCCh. 39.4 - Prob. 1CCCh. 39.4 - Prob. 1TYK
Ch. 39.4 - Prob. 2TYKCh. 39.5 - The three germ layers of triploblasts are...Ch. 39.5 - Choose the correct sequence of events. cleavage...Ch. 39.6 - Under what condition(s) might you expect temporary...Ch. 39.6 - Prob. 2TYKCh. 39 - Prob. 1TYCh. 39 - Prob. 2TYCh. 39 - Spermatogonia are haploid germ cells. d. have...Ch. 39 - Prob. 4TYCh. 39 - Prob. 5TYCh. 39 - Prob. 6TYCh. 39 - A major function of FSH is to stimulate the...Ch. 39 - Prob. 8TYCh. 39 - Prob. 9TYCh. 39 - Cells of the neural crest give rise to the central...Ch. 39 - Prob. 1CCQCh. 39 - Prob. 2CCQCh. 39 - Prob. 3CCQCh. 39 - Describe the major events in animal development...Ch. 39 - Describe the events of the ovarian and uterine...
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- A blood sample taken from the umbilical cord contains high levels of oxygen and nutrients, and low levels of carbon dioxide and waste products. Is thissample from an umbilical artery or from the umbilical vein? Explain.arrow_forwardWhy is hypertension particularly dangerous for a pregnant woman in the later stages of pregnancy?arrow_forwardDraw a schematic diagram of the fetal circulation indication the route of blood flow from the placenta, vice-versa.arrow_forward
- Why is Fetal Hemoglobin Essential for survival of Placental animals?arrow_forwardDescribe how the following components relate to the placenta: umbilical arteriescotyledons, fetal vessels,chorionic villi, intervillous space, spiral arterioles, and umbilical vein?arrow_forwardSeeing that the placenta acts as a barrier protecting the baby from harmful substances the mother may consume, how come some babies develop ailments like Fetal Alcohol Syndrome? Are there some substances that render the protective function of the placenta less useful than required?arrow_forward
- In some children, the ductus arteriosus stays open after birth (called patent ductus arteriosus). Why is having an open ductus arteriosus a problem after the baby is born?arrow_forwardShould young women collect and freeze oocytes for use later in life when they want to have children? (A bit of a loaded question…) What are the risks associated with older women having children?arrow_forwardDescribe the structure of the placenta and the pathways for exchange between maternal and fetal blood?arrow_forward
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