PRINCIPLES OF HUMAN PHYSIOLOGY (LCPO)
6th Edition
ISBN: 9780134289359
Author: STANFIELD
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 7E
Which of the following would occur if mean arterial pressure increased from 95 mm Hg to 125 mm Hg?
a. Glomerular filtration rate would increase because of the increased glomerular capillary hydrostatic pressure
b. Glomerular filtration rate would decrease because of the increased Bowman's capsule hydrostatic pressure.
c. Glomerular filtration rate would not change because Of autoregulation.
d. Glomerular filtration rate would not change because of activation of the sympathetic nervous system.
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Use the following information to answer the question(s) below.
Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and
Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed
the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a
measure of overall body size) plotted against the percent survival of these different size classes for males and females.
Survival (%)
100-
80-
60-
40-
20-
0+
1.9
T
2 2.1
2.2 2.3 2.4 2.5 2.6 2.7
Log SVL (mm)
19) Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas?
A) directional selection
B) stabilizing selection
C) disruptive selection
D) You cannot determine the type of selection from the above information.
3
24) Use the following information to answer the question below.
Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not.
They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes
the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin.
Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are
determined (see table) and used to determine the actual allele frequencies in the population.
TT
0.49
Tt
0.42
tt
0.09
Refer to the table above. Is this population in Hardy-Weinberg equilibrium?
A) Yes.
C) No; there are more homozygotes than expected.
B) No; there are more heterozygotes than expected.
D) It is impossible to tell.
30)
A
B
CDEFG
Refer to the accompanying figure. Which of the following forms a monophyletic group?
A) A, B, C, and D
B) C and D
C) D, E, and F
D) E, F, and G
Chapter 18 Solutions
PRINCIPLES OF HUMAN PHYSIOLOGY (LCPO)
Ch. 18.2 -
Describe the symptoms that indicate the presence...Ch. 18.2 - What treatments are available for removing or...Ch. 18.2 - Prob. 3CTQCh. 18.2 - Prob. 18.1.1QCCh. 18.2 - Prob. 18.1.2QCCh. 18.2 - Prob. 18.1.3QCCh. 18.2 - Prob. 18.1.4QCCh. 18.3 - Indicate whether the GFR will tend to rise or fall...Ch. 18.3 - Prob. 18.2.2QCCh. 18.3 -
Is the control of afferent and efferent...
Ch. 18.3 -
Describe the barriers for reabsorption and...Ch. 18.3 -
Describe the general mechanism of water...Ch. 18.3 -
Define the terms transport maximum and renal...Ch. 18.3 - Prob. 1CTQCh. 18.3 - Prob. 2CTQCh. 18.3 - Prob. 3CTQCh. 18.5 - Prob. 1CTQCh. 18.5 - Prob. 2CTQCh. 18.5 - Prob. 3CTQCh. 18.5 - Prob. 18.4.1QCCh. 18.5 - Prob. 18.4.2QCCh. 18.5 - Prob. 18.4.3QCCh. 18.5 -
Describe the innervation of the bladder,...Ch. 18 - Prob. 1ECh. 18 -
Which of the following is not one of the...Ch. 18 - Which type of specialized junction connects...Ch. 18 - Which of the following does not favor a large...Ch. 18 - Prob. 5ECh. 18 - Prob. 6ECh. 18 - Which of the following would occur if mean...Ch. 18 - Prob. 8ECh. 18 - Prob. 9ECh. 18 - Prob. 10ECh. 18 -
Micturition occurs in response to
a Relaxation...Ch. 18 - The (ureter/urethra) carries urine from the...Ch. 18 - Urinary excretion is the elimination of urine from...Ch. 18 -
The (afferent/efferent) arteriole carries blood...Ch. 18 - Prob. 15ECh. 18 - Prob. 16ECh. 18 - Prob. 17ECh. 18 - Prob. 18ECh. 18 - Prob. 19ECh. 18 - Prob. 20ECh. 18 - Prob. 21ECh. 18 - Prob. 22ECh. 18 -
Substances that are reabsorbed move into the...Ch. 18 - An increase in the flow rate through the macula...Ch. 18 -
Glucose reabsorption occurs primarily in the...Ch. 18 -
Describe the pathway of filtrate flow from the...Ch. 18 - Explain why the glomerular filtration rate does...Ch. 18 - Prob. 28ECh. 18 - Explain the concept of transport maximum. Why does...Ch. 18 - Prob. 30ECh. 18 - Prob. 31ECh. 18 - Prob. 32ECh. 18 - Prob. 33ECh. 18 -
Compare the responses of the smooth muscle in...
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