EBK HUMAN PHYSIOLOGY
15th Edition
ISBN: 9781260163049
Author: Fox
Publisher: MCGRAW HILL BOOK COMPANY
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Chapter 10, Problem 17CP
Summary Introduction
To review:
The neural pathways associated with the retina along with the functions of the geniculostirate and tectal system.
Introduction:
The retina of the human eye is associated with the formation of the inverted image of the object from the incident light. The photoreceptor cells present in the retina are the first to be stimulated by the incident light and to transmit nerve impulses. There are various neurons associated with the transmission of nerve impulses to the brain from retina.
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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?
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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 10 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 10 - Prob. 1aCPCh. 10 - Prob. 1bCPCh. 10 - Prob. 1cCPCh. 10 - Prob. 2CPCh. 10 - Prob. 3CPCh. 10 - Define the term sensory acuity and explain how...Ch. 10 - Prob. 4bCPCh. 10 - Prob. 5CPCh. 10 - Prob. 6CPCh. 10 - Prob. 7aCP
Ch. 10 - Describe the structure of the semicircular canals...Ch. 10 - Prob. 8CPCh. 10 - Prob. 9CPCh. 10 - Prob. 10CPCh. 10 - Prob. 11CPCh. 10 - Using a line diagram, show how parallel rays of...Ch. 10 - Prob. 13CPCh. 10 - Describe the layers of the retina and trace the...Ch. 10 - Prob. 14bCPCh. 10 - Describe the electrical state of photoreceptors in...Ch. 10 - Prob. 16aCPCh. 10 - Prob. 16bCPCh. 10 - Prob. 17CPCh. 10 - Describe the way in which ganglion cells typically...Ch. 10 - How can the arrangement of the receptive fields of...Ch. 10 - Describe the stimulus requirements of simple...Ch. 10 - Prob. 1RACh. 10 - Match the vestibular organ on the left with its...Ch. 10 - Prob. 3RACh. 10 - Prob. 4RACh. 10 - Prob. 5RACh. 10 - Cutaneous receptive fields are smallest in a. the...Ch. 10 - Prob. 7RACh. 10 - The receptors for taste are
a. naked sensory...Ch. 10 - Prob. 9RACh. 10 - Prob. 10RACh. 10 - Prob. 11RACh. 10 - Glasses with concave lenses help correct a....Ch. 10 - Prob. 13RACh. 10 - A bar of light in a specific part of the retina,...Ch. 10 - Prob. 15RACh. 10 - Prob. 16RACh. 10 - Prob. 17RACh. 10 - Epithelial cells release transmitter chemicals...Ch. 10 - Explain what is meant by lateral inhibition and...Ch. 10 - Prob. 20RACh. 10 - Prob. 21RACh. 10 - Explain the relationship between smell and taste....Ch. 10 - Prob. 23RACh. 10 - Prob. 24RACh. 10 - Prob. 25RACh. 10 - Describe the sequence of changes that occur during...Ch. 10 - Prob. 27RACh. 10 - Prob. 28RACh. 10 - Prob. 29RACh. 10 - Prob. 30RACh. 10 - Describe the receptive fields of retinal ganglion...Ch. 10 - Prob. 32RACh. 10 - Discuss the different functions of the pigment...Ch. 10 - Prob. 34RACh. 10 - Prob. 35RACh. 10 - People with conduction deafness often speak...Ch. 10 - Prob. 37RACh. 10 - Prob. 38RACh. 10 - Discuss the role that inertia plays in the...Ch. 10 - Prob. 40RACh. 10 - Prob. 41RACh. 10 - Prob. 42RACh. 10 - Prob. 43RACh. 10 - Prob. 44RACh. 10 - Prob. 45RACh. 10 - Prob. 46RA
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- 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-haemoglobinarrow_forwardWhich ONE of the following is FALSE regarding haemoglobin? It has two alpha subunits and two beta subunits. The subunits are joined by disulphide bonds. Each subunit covalently binds a haem group. Conformational change in one subunit can be transmitted to another. There are many variant ("mutant") forms of haemoglobin that are not harmful.arrow_forwardWhich ONE of the following is FALSE regarding haemoglobin? It has two alpha subunits and two beta subunits. The subunits are joined by disulphide bonds. Each subunit covalently binds a haem group. Conformational change in one subunit can be transmitted to another. There are many variant ("mutant") forms of haemoglobin that are not harmful.arrow_forward
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