EBK HUMAN PHYSIOLOGY
15th Edition
ISBN: 9781260163049
Author: Fox
Publisher: MCGRAW HILL BOOK COMPANY
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Chapter 9, Problem 18RA
Summary Introduction
To review:
The examples of drugs that selectively stimulate or block various adrenergic receptors along with their clinical applications.
Introduction:
The adrenergic receptors are the G protein-coupled receptors present in the plasma membrane of most cells. The adrenergic receptors are mainly of two types- the alpha adrenergic receptors and the beta adrenergic receptors. These receptors transmit the neurotransmitter (acetylcholine) through the synapses formed between the muscles and neurons.
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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-haemoglobin
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
Which 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.
Chapter 9 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 9 - Describe the preganglionic and postganglionic...Ch. 9 - Compare the control of cardiac muscle and smooth...Ch. 9 - Describe the sympathetic pathway from the CNS to...Ch. 9 - Prob. 4CPCh. 9 - Prob. 5CPCh. 9 - Prob. 6CPCh. 9 - Prob. 7CPCh. 9 - Prob. 8CPCh. 9 - Explain how the effects of the sympathetic and...Ch. 9 - Prob. 1RA
Ch. 9 - Prob. 2RACh. 9 - Prob. 3RACh. 9 - Prob. 4RACh. 9 - Which of these fibers release norepinephrine? a....Ch. 9 - Prob. 6RACh. 9 - Prob. 7RACh. 9 - Prob. 8RACh. 9 - Prob. 9RACh. 9 - Prob. 10RACh. 9 - Prob. 11RACh. 9 - A drug that serves as an agonist for ai receptors...Ch. 9 - Prob. 13RACh. 9 - Prob. 14RACh. 9 - Compare the effects of adrenergic and cholinergic...Ch. 9 - Prob. 16RACh. 9 - Prob. 17RACh. 9 - Prob. 18RACh. 9 - Prob. 19RACh. 9 - Prob. 20RACh. 9 - Prob. 21RACh. 9 - Prob. 22RACh. 9 - Prob. 23RACh. 9 - Prob. 24RACh. 9 - Prob. 25RACh. 9 - Prob. 26RACh. 9 - Prob. 27RACh. 9 - Prob. 28RACh. 9 - Prob. 29RACh. 9 - Prob. 30RACh. 9 - Refer to table 7.3 to obtain axon diameters and...
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