MasteringA&P with Pearson eText -- Standalone Access Card -- for Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134650623
Author: Marieb
Publisher: PEARSON
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Question
Chapter 10, Problem 33CT
Summary Introduction
To review:
The mode of transfer of oxygen across the placenta from a mother to fetus with the help of fetal hemoglobin (HbF).
Introduction:
Blood formation starts early in the fetus by the 28th day of fetal life. The embryonic blood cells start circulating in the blood vessels. The blood of the fetus possesses a different type of hemoglobin known as fetal hemoglobin or hemoglobin F or HbF.
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Briefly explain why fetal Hb has a higher affinity for O2 when compared to the adult Hb under similar condition of pH and [BPG].
Explain in detail the role of fetal haemoglobin (HbF) in the delivery of oxygen to a fetus during pregnancy.
The PO2 of placental blood is about 40 mmHg. What are the O2 saturations of maternal and fetal hemoglobin at this PO2?
Chapter 10 Solutions
MasteringA&P with Pearson eText -- Standalone Access Card -- for Essentials of Human Anatomy & Physiology (12th Edition)
Ch. 10 - More than one choice may apply. Which would lead...Ch. 10 - Prob. 2MCCh. 10 - Prob. 3MCCh. 10 - Prob. 4MCCh. 10 - Which of the following is not typical of...Ch. 10 - Prob. 6MCCh. 10 - Prob. 7MCCh. 10 - Prob. 8MCCh. 10 - Prob. 9MCCh. 10 - Prob. 10MC
Ch. 10 - Prob. 11MCCh. 10 - Prob. 12MCCh. 10 - Prob. 13SAECh. 10 - Prob. 14SAECh. 10 - Prob. 15SAECh. 10 - Prob. 16SAECh. 10 - 17. Name the granular and agranular WBCs. Give the...Ch. 10 - Name the formed elements that arise from myeloid...Ch. 10 - Prob. 19SAECh. 10 - Describe the process of hemostasis. Indicate what...Ch. 10 - How can liver dysfunction cause bleeding...Ch. 10 - Prob. 22SAECh. 10 - Prob. 23SAECh. 10 - Prob. 24SAECh. 10 - Prob. 25SAECh. 10 - Prob. 26SAECh. 10 - Prob. 27CTCh. 10 - Prob. 28CTCh. 10 - Prob. 29CTCh. 10 - Prob. 30CTCh. 10 - Prob. 31CTCh. 10 - Prob. 32CTCh. 10 - Prob. 33CTCh. 10 - Prob. 34CTCh. 10 - Prob. 35CT
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- Why is fetal hemoglobin’s affinity for O2 greater than thatof maternal hemoglobin?arrow_forwardDiagram the methemoglobin reductase pathway and explain its importance in maintaining functional hemoglobin.arrow_forwardExplain how the clustering of hemoglobin genesimpacts the cellular strategy to regulate theirexpressionarrow_forward
- a) How does the fetal hemoglobin differ from the maternal hemoglobin in regards to structure and function? b) Explain the Bohr effect by drawing oxygen dissociation curves on a single graph that highlight changes in the hemoglobin affinity for O2 c) Describe the molecular basis of sickle cell anemia. Be specificarrow_forwardExplain how giving an alcoholic patient who has hypoglycaemia an Intravenous Infusion (IV) of glucose Alone can be fetal.arrow_forwardExplain how the following conditions affect the structure and function of hemoglobin. Sickle cell anemia, fetal hemoglobin and lowed pHarrow_forward
- Describe the major transportation modes of O2 and CO2 in the blood.arrow_forwardOutline why it is important that fetal haemoglobin has higher oxygen affinity than adult haemoglobin?arrow_forwardWhich of the following best explains why fetal hemoglobin (HbF) has higher affinity for oxygen than HbA? a. HbF binds 2,3-bisphosphoglycerate with lower affinity b. One of the coordination positions of HbF is occupied by an Asp residue c. Oxygen binding is not cooperative in HbF d. The Fe-O bond is shorter in HbF e. The hemes of HbF and HbA have different structuresarrow_forward
- Explain HCl Production?arrow_forward22. Please provide a biological explanation for why fetal hemoglobin has evolved to have lower affinity for BPG than adult hemoglobin.arrow_forwardWill a mutation from Distal histidine to phenylalanine shift the binding curve of hemoglobin?Will it shift the curve to the left or right, shift to myoglobin or no longer bind to O2?arrow_forward
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