Human Biology
16th Edition
ISBN: 9781260482799
Author: Mader, Sylvia
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 18.3, Problem 1CYP
Summary Introduction
To describe:The path of blood flow in the fetus, starting with the placenta, and the structures that are unique to fetal circulation.
Introduction:
Fetal circulation is the circulation system of the fetus and lungs are not used in this circulation. Therefore this prenatal circulatory system is different from the postnatal circulation system. Placenta keeps the fetus's blood supply separate from the maternal blood supply. The umbilical cord is the birth cord that connects the fetus to the womb of the mother.
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A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
With reference to their absorption spectra of the oxy haemoglobin intact line) and deoxyhemoglobin (broken line) shown in Figure 2 below, how would you best explain the reason why there are differences in the major peaks of the spectra? Figure 2. SPECTRA OF OXYGENATED AND DEOXYGENATED HAEMOGLOBIN OBTAINED WITH THE RECORDING SPECTROPHOTOMETER 1.4 Abs < 0.8 06 0.4 400 420 440 460 480 500 520 540 560 580 600 nm 1. The difference in the spectra is due to a pH change in the deoxy-haemoglobin due to uptake of CO2- 2. There is more oxygen-carrying plasma in the oxy-haemoglobin sample. 3. The change in Mr due to oxygen binding causes the oxy haemoglobin to have a higher absorbance peak. 4. Oxy-haemoglobin is contaminated by carbaminohemoglobin, and therefore has a higher absorbance peak 5. Oxy-haemoglobin absorbs more light of blue wavelengths and less of red wavelengths than deoxy-haemoglobin
Chapter 18 Solutions
Human Biology
Ch. 18.1 - Prob. 1LOCh. 18.1 - Describe the steps in fertilization.Ch. 18.1 - Distinguish between the functions of the corona...Ch. 18.1 - Explain what prevents multiple sperm from...Ch. 18.2 - Prob. 1LOCh. 18.2 - Prob. 2LOCh. 18.2 - Prob. 3LOCh. 18.2 - Prob. 4LOCh. 18.2 - Prob. 1CYPCh. 18.2 - Describe the function of the extraembryonic...
Ch. 18.2 - Prob. 3CYPCh. 18.3 - Prob. 1LOCh. 18.3 - Prob. 2LOCh. 18.3 - Prob. 3LOCh. 18.3 - Prob. 4LOCh. 18.3 - 1. Besides tobacco, alcohol. and illegal drugs,...Ch. 18.3 - Prob. 1CYPCh. 18.3 - Prob. 2CYPCh. 18.3 - Prob. 3CYPCh. 18.4 - Prob. 1LOCh. 18.4 - Summarize the events that occur during each stage...Ch. 18.4 - Prob. 1CYPCh. 18.4 - Maternal blood carbon dioxide levels fall by 20%...Ch. 18.4 - Describe the three stages of labor.Ch. 18.5 - Prob. 1LOCh. 18.5 - Prob. 2LOCh. 18.5 - What is the role of the hippocampus, and how does...Ch. 18.5 - Prob. 2BTHCh. 18.5 - Prob. 1CYPCh. 18.5 - Prob. 2CYPCh. 18.5 - Prob. 3CYPCh. 18 - Prob. 1ACh. 18 - Prob. 2ACh. 18 - Label each of the indicated stages of...Ch. 18 - Prob. 4ACh. 18 - Prob. 5ACh. 18 - Prob. 6ACh. 18 - Prob. 7ACh. 18 - Prob. 8ACh. 18 - Prob. 9ACh. 18 - Prob. 10ACh. 18 - Prob. 11ACh. 18 - Prob. 12ACh. 18 - Prob. 13ACh. 18 - Prob. 14ACh. 18 - At-home pregnancy tests check for the presence of...Ch. 18 - Prob. 2TCCh. 18 - Prob. 3TC
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