Pearson eText Principles of Human Physiology -- Instant Access (Pearson+)
6th Edition
ISBN: 9780135213001
Author: Cindy Stanfield
Publisher: PEARSON+
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Chapter 9.3, Problem 9.3.2QC
Summary Introduction
To write:
The three structures that make up the brainstem.
Introduction:
Brainstem can be defined as the central stalk of the mammalian brain. It is the posterior part of the brain. It consists of three structures. It continues in a downward direction to form the spinal cord. It plays a significant role in the regulation of respiratory and cardiac functions, sleep cycle and CNS activities.
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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 9 Solutions
Pearson eText Principles of Human Physiology -- Instant Access (Pearson+)
Ch. 9.1 - Describe the symptoms and causes of multiple...Ch. 9.1 - What are the main areas of commonality between...Ch. 9.1 - What are the key differences between these three...Ch. 9.1 - Prob. 1aCTQCh. 9.1 - Prob. 2aCTQCh. 9.1 - Identify differences in the treatment and expected...Ch. 9.1 - Prob. 9.1.1QCCh. 9.1 - Prob. 9.1.2QCCh. 9.1 - Prob. 9.1.3QCCh. 9.2 - Prob. 9.2.1QC
Ch. 9.2 - Prob. 9.2.2QCCh. 9.2 - Prob. 9.2.3QCCh. 9.3 - Prob. 9.3.1QCCh. 9.3 - Prob. 9.3.2QCCh. 9.3 - Prob. 9.3.3QCCh. 9.3 - For each of the following functions, indicate...Ch. 9.4 - Is salivation in response to a bell an example of...Ch. 9.4 - Prob. 9.4.2QCCh. 9.5 - Prob. 9.5.1QCCh. 9.5 - Prob. 9.5.2QCCh. 9.7 - Describe how cortisol and the autonomic nervous...Ch. 9.7 - Prob. 2CTQCh. 9.7 - What do you suppose are the limitations of current...Ch. 9.7 - Prob. 9.6.1QCCh. 9.7 -
Which types of EEG changes are observed as a...Ch. 9.7 - What is the ascending reticular activating system,...Ch. 9.9 - Prob. 9.7.1QCCh. 9.9 - Prob. 9.7.2QCCh. 9 - Prob. 1ECh. 9 - Prob. 2ECh. 9 - Prob. 3ECh. 9 - Prob. 4ECh. 9 - Prob. 5ECh. 9 -
The origin of neurons of the corticospinal tract...Ch. 9 -
Which of the following is not a component of the...Ch. 9 - Prob. 8ECh. 9 - Prob. 9ECh. 9 - Prob. 10ECh. 9 - Prob. 11ECh. 9 - Prob. 12ECh. 9 - Prob. 13ECh. 9 - Prob. 14ECh. 9 - Prob. 15ECh. 9 - Prob. 16ECh. 9 - Prob. 17ECh. 9 - Prob. 18ECh. 9 - Prob. 19ECh. 9 - Prob. 20ECh. 9 - Prob. 21ECh. 9 - Prob. 22ECh. 9 - Prob. 23ECh. 9 - Prob. 24ECh. 9 - Prob. 25ECh. 9 -
Describe the different structures that protect...Ch. 9 -
Describe the energy supply to the brain.
Ch. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 30ECh. 9 -
Describe the roles of NMDA and AMPA receptors in...Ch. 9 - Prob. 32ECh. 9 -
Suppose a person suffers a stroke that affects...Ch. 9 -
Reflexes can be overridden by voluntary controls....Ch. 9 -
Paralysis refers to the inability to voluntarily...
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