Inquiry into Life
16th Edition
ISBN: 9781260482638
Author: Mader, Sylvia
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 21.6, Problem 1CYP
Summary Introduction
To write:
How the sildenafil increases the erection?
Given:
Sildenafil (Viagra) and other similar oral medications work in a way to enhance the erections.
Introduction:
Sildenafil (Viagra) and several other drugs are used for the treatment of erectile dysfunction. These drugs are categorized under the class of drugs known as PDE-5 inhibitors because they work as a phosphodiesterase inhibitor.
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Students have asked these similar questions
a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent.
b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved
If you wanted to reduce the difference between peak and trough levels that occur with repeated administration of a drug, how would you adjust the dose and dose interval without changing the plateau concentration (plateau is the average of peak and trough levels)? Select your answers for both dose and interval. Hint: It may be helpful to think about this problem using an example such as food. How would you eat if you wanted to maintain very steady hunger/satiety levels without changing your total caloric intake?
Options:
A. Dose; Increase dose
B. Dose; Decrease dose
C. Dose; Do not change dose
D. Interval; Increase the interval between doses (give the drug less frequently)
E. Interval; Decrease the interval between doses (give the drug more frequently)
F. Interval; Do not change the interval
What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent. Show the math
Chapter 21 Solutions
Inquiry into Life
Ch. 21.1 - Prob. 1LOCh. 21.1 - Prob. 2LOCh. 21.1 - Analyze the role of gonadotropin-releasing...Ch. 21.1 - Prob. 1CYPCh. 21.1 - Prob. 2CYPCh. 21.1 - Prob. 3CYPCh. 21.2 - Prob. 1LOCh. 21.2 - 2. Discuss the major components of the female...Ch. 21.2 - Prob. 3LOCh. 21.2 - Prob. 1CYP
Ch. 21.2 - Prob. 2CYPCh. 21.2 - Prob. 3CYPCh. 21.3 - List the stages of the ovarian cycle and explain...Ch. 21.3 - Prob. 2LOCh. 21.3 - Prob. 3LOCh. 21.3 - Prob. 4LOCh. 21.3 - Summarize the events that occur during the two...Ch. 21.3 - Prob. 2CYPCh. 21.3 - Describe the changes that occur in the ovarian and...Ch. 21.4 - Distinguish digital birth control methods that are...Ch. 21.4 - Prob. 2LOCh. 21.4 - Prob. 3LOCh. 21.4 - Prob. 1CYPCh. 21.4 - Prob. 2CYPCh. 21.4 - Prob. 3CYPCh. 21.4 - Prob. 4CYPCh. 21.5 - List the specific cause and common symptoms of...Ch. 21.5 - Prob. 2LOCh. 21.5 - Prob. 3LOCh. 21.5 - Prob. 4LOCh. 21.5 - Prob. 1QTCCh. 21.5 - Prob. 2QTCCh. 21.5 - Prob. 3QTCCh. 21.5 - Prob. 1AQTCCh. 21.5 - What cultural factors may be inhibiting the...Ch. 21.5 - Prob. 1CYPCh. 21.5 - Prob. 2CYPCh. 21.5 - Prob. 3CYPCh. 21.5 - Explain why viral diseases, in general, are more...Ch. 21.6 - Describe some common disorders of the male...Ch. 21.6 - 2. Describe some common disorders of the female...Ch. 21.6 - 3. Discuss four assisted reproductive technology...Ch. 21.6 - There are undeniable benefits to the use of...Ch. 21.6 - How might chronic-disrupting chemicals specially...Ch. 21.6 - 3. What would be some implications for agriculture...Ch. 21.6 - Explain how sildenafil(Viagra®) and singular...Ch. 21.6 - 2. Describe how endometriosis causes...Ch. 21.6 - 3. List some factors that explain why ovary and...Ch. 21.6 - 4. Compare the degree of medical intervention...Ch. 21 - Prob. S5.4BYBCh. 21 - Prob. S20.1BYBCh. 21 - Prob. S20.6BYBCh. 21 - Prob. 1ACh. 21 - Prob. 2ACh. 21 - Spermatogenesis occur in the structure of the male...Ch. 21 - Prob. 4ACh. 21 - Prob. 5ACh. 21 - Prob. 6ACh. 21 - The release of the oocyte from the follicle is...Ch. 21 - Prob. 8ACh. 21 - Prob. 9ACh. 21 - Prob. 10ACh. 21 - Prob. 11ACh. 21 - Prob. 12ACh. 21 - Prob. 13ACh. 21 - Prob. 14ACh. 21 - Prob. 15ACh. 21 - Prob. 16ACh. 21 - Prob. 1TCCh. 21 - Prob. 2TCCh. 21 - The condition called benign prostatic hyperplasia...Ch. 21 - Prob. 4TC
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