Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 43.6, Problem 1TC
Summary Introduction
To determine:
The reason that why it is biologically useful to have the fetal and maternal bloodstreams separated by membranes, rather than have their blood vessels fuse into one combined circulatory system.
Introduction:
The placenta is a type of organ that develops inside the female uterus at the time of pregnancy. The placenta is involved in the exchange of oxygen, nutrients, and waste material in between the mother and fetus.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Your cousin just had twins. She tells you that twinning occurs when two sperm fertilize the same egg. You reply when two sperm fertilize the same egg. What will be your reply?
a) yes, she is right, that is the most common source of twinning
b) no, only one sperm survives passage through the uterine cervix, so two sperm are never present at fertilization
c) no, cortical granules are used to prevent additional sperm penetration
d) no, twinning occurs when unfertilized eggs divide spontaneously and thus is parthenogenic in nature
Seeing 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?
The Food and Nutrition Board of the Institute of Medicine recommends that all women who might
become pregnant consume at least 400 µg/day of folate from supplements or fortified foods. Why?
Why would a premature infant require supplemental oxygen?
Describe how the newborn's first breath alters the circulatory pattern?
Chapter 43 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 43.1 - define development and describe how cell division...Ch. 43.2 - Prob. 1CYLCh. 43.3 - describe early development in amphibians,...Ch. 43.3 - Prob. 2CYLCh. 43.4 - Prob. 1TCCh. 43.4 - Prob. 2TCCh. 43.4 - Does the development of a human limb, and the rest...Ch. 43.4 - Prob. 1CYLCh. 43.4 - Prob. 2CYLCh. 43.5 - Prob. 1TC
Ch. 43.5 - Prob. 1CSCCh. 43.5 - Prob. 2TCCh. 43.5 - Prob. 3TCCh. 43.5 - Prob. 1HYEWCh. 43.5 - describe human embryonic development from...Ch. 43.5 - describe the structure and function of the...Ch. 43.5 - Prob. 3CYLCh. 43.6 - Prob. 1TCCh. 43.6 - Prob. 1CYLCh. 43.6 - Prob. 2CYLCh. 43.6 - Prob. 3CYLCh. 43.6 - Prob. 2TCCh. 43 - Prob. 1MCCh. 43 - Animals with Indirect development a. develop...Ch. 43 - Prob. 3MCCh. 43 - Prob. 4MCCh. 43 - Prob. 5MCCh. 43 - Prob. 6MCCh. 43 - Prob. 7MCCh. 43 - Prob. 8MCCh. 43 - Prob. 1FIBCh. 43 - Prob. 2FIBCh. 43 - Prob. 3FIBCh. 43 - Prob. 4FIBCh. 43 - Distinguish between direct and indirect...Ch. 43 - Describe the structure and function of the four...Ch. 43 - What is gastrulation? Describe gastrulation in...Ch. 43 - Prob. 4RQCh. 43 - Prob. 5RQCh. 43 - In humans, where does fertilization occur, and...Ch. 43 - Prob. 7RQCh. 43 - Prob. 8RQCh. 43 - How do changes in the breast prepare a mother to...Ch. 43 - Prob. 10RQCh. 43 - Prob. 1ACCh. 43 - Prob. 2AC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Select your answer from the drop-down menu. Substances from fetus and mother are exchanged across the placenta by............. a) Osmosis b) Diffusion c) Filteration d) Pumps Please I need a surely answer and a quicker responsearrow_forwardWhy can twins resulting from a single fertilized egg exchange blood or receive organ transplants from each other without rejection, whereas twins resulting from two fertilized eggs sometimes cannot?arrow_forwardKen Doll isn't very smart. He and Barbie are not trying to have a baby. Ken is confused about a few details and asked his friend GI Joe why Barbie became pregnant. "Look, we did the deed on Monday and she didn't ovulate until Thursday. I should have been safe and my 'little swimmers' should have been out of there by then." How should GI Joe explain the necessary information to Ken?arrow_forward
- Which statement regarding fetal/maternal circulation is correct? Question 25 options: a) Two arteries in the umbilical cord carry deoxygenated blood and waste products away from the fetus to the placenta b) Two veins in the umbilical cord carry blood that is high in carbon dioxide and other waste products away from the fetus to the placenta c) Two arteries carry freshly oxygenated blood and nutrient-rich blood back from the placenta to the fetus d) One artery carries freshly oxygenated blood and nutrient-rich blood back from the placenta to the fetusarrow_forwardExplain why it is so important that the blood of mother and offspring do not mix together in the placenta. List the structural features of the placenta that contribute to efficient exchange and explain why each is important.arrow_forwardDoes the placenta allow fetal blood cells to mix with the maternal blood?arrow_forward
- A friend in your dormitory, a freshman, tells you that she just discovered she is 3 months pregnant. You know that since she came to college she has been experimenting with recreational drugs. Circle the best advice you could give her, and explain your choice. (a) She must stop taking the drugs, but they could not have affected her fetus during these first few months of her pregnancy. (b) Harmful substances usually cannot pass from mother to embryo, so she can keep using drugs. (c) There could be defects in the fetus, so she should stop using drugs and visit a doctor as soon as possible. (d) If she has not taken any drugs in the last week, she is OK.arrow_forwardIs there a exchange of cells between the mother and the fetus through the placenta?arrow_forwardThe __________ arteries are the blood vessels of the heart, responsible for nutrient and O2 transport to the heart muscles. A part of the endocrine system, the __________ is responsible for producing T-cells in addition to producing hormones involved in controlling metabolism. The ________ diverts oxygen-poor blood away from fetal lungs, helping it to be delivered to the placental border for exchange with the maternal blood supply.arrow_forward
- Imagine that you are in your late 30s or early 40s and decide that you want a child. You realize that you’re at greater risk of having a child with Down’s Syndrome. What sorts of genetic screening are available today? If you find out that this child has this condition, do you think it’s appropriate to have an abortion? Why or why not? Question: Does elective abortion of fetuses with physical or other developmental disabilities have an effect on the perception of personhood, dignity, and rights in society? Explain.arrow_forwardat what point does life begins in a pregnancy, in other words, does it begin at initial conception, when it becomes an embryo, when it becomes a fetus, or is there some other point in which life begins?arrow_forwardDo other organs or organ systems develop at the same time? Are they related to the function of your assigned organ or organ system? A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm. If it were possible to fertilize one of the woman's eggs by removing a sperm nucleus and injecting it into the egg, could this procedure ever produce viable offspring? Why or why not?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Surgical Tech For Surgical Tech Pos CareHealth & NutritionISBN:9781337648868Author:AssociationPublisher:Cengage
Surgical Tech For Surgical Tech Pos Care
Health & Nutrition
ISBN:9781337648868
Author:Association
Publisher:Cengage