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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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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- Please match the descriptions to the numbers on the fetal circulation diagram below. 11 6 12 13 10 14 ND UNN MEDALarrow_forwardName two blood vessels that close off and become fibrous cords soon after birth?arrow_forwardDescribe the nutrient and gas content of the blood flowing in the umbilical vein. Is this the kind of blood you would expect to find in a vein? Explain. Is there another place in the body where a similar situation occurs? If so, where?arrow_forward
- Why is Fetal Hemoglobin Essential for survival of Placental animals?arrow_forwardA 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_forwardThe ductus arteriosus in a fetus allows blood to flow directly a.) into the vena cava from the pulmonary vein b.) from the left atrium into the right atrium c.) into the aorta from the pulmonary artery d.) from the right atrium into the left atriumarrow_forward
- Hyperthyroidism increases the amount of ATP formed in the individual and increases heart rate. What effect does it have on hemoglobin levels. Choose from the following: (A) hyperthyroidism would increase the number of erythrocytes and the amount of hemoglobin (B) hyperthyroidism would decrease the amount of hemoglobinarrow_forwardDescribe how blood reactions may occur between fetal and maternal tissues.arrow_forwardDo blood donors have their blood counts taken? Why or why not?arrow_forward
- A mother whose blood type is 'A-' gives birth to a baby with A+ blood type. The baby is diagnosed with erythroblastosis fetalis and needs an immediate transfusion. Which of the following blood types should the infant receive? (A) A+ (B) A- (C) AB- (D) O+ (E) O-arrow_forwardSeveral years ago, the deaths of several airline travelers led to the warning about “economic-class syndrome.” The idea is that economic-class passengers do not have as much leg room as passengers in more expensive seats, so they are more likely to sit essentially motionless for long periods of flights-conditions that may allow blood to pool and clots to form in the legs. This condition is called deep-vein thrombosis, or DVT. Given what you know about blood flow in the veins, explain why periodically getting up and moving around in a plane’s cabin during a long flight may lower the risk that a cloth will form.arrow_forwardWhich of the following changes happen at birth or a couple hours afterward? A) The connection between the right and left ventricles gets sealed. B) The connection between the left pulmonary artery and aorta gets sealed. C) The connection between the right ventricle and pulmonary trunk gets sealed. D) The connection between the left atrium and left ventricles gets sealed.arrow_forward
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