Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
bartleby

Concept explainers

bartleby

Videos

Question
Book Icon
Chapter 38, Problem 1DAA
Summary Introduction

To determine: How the effects of low-level tobacco smoking on forced expiration volume differ from those of low-level marijuana smoking.

Concept introduction: Smoking has a wide range of negative health effects. It increases the risk of lung infection and many types of cancer. Tobacco contains more than 40 carcinogens. Tobacco smokers have a higher risk of cardiovascular disease. Another smoking material is marijuana which contains carbon monoxide and an assortment of carcinogens, including arsenic and ammonia, but few studies have not found an increased risk of lung cancer who only smokes marijuana. The people who smoke both marijuana and tobacco seem to have more respiratory problems than those who smoke only tobacco.

Expert Solution & Answer
Check Mark

Explanation of Solution

Forced expiration volume is the volume of air that an individual can exhale after a deep inhalation. Smoking alters lung function that results in breathing problem that can change the forced expiration volume.

The data represented is based on the study done for effects of smoking to assess lung function by the Coronary Artery Risk Development in Young Adults (CARDIA). The study involves about 5,000 people aged between 18 to 30 years old in a long-term study. The study was followed for 20 years and periodical assessment of habit, health, and lung function was conducted to know how the lifetime use of tobacco and marijuana affects the forced expiration.

Refer to Fig. 38.19 “Association between marijuana or tobacco smoking and the change in forced expiration volume (FEV)” in the textbook, the low-level of tobacco use causes a direct decrease of FEV, but the low level of marijuana use causes an increase in FEV first, and then a decrease in FEV. In comparison to tobacco use, the decrease in FEV is low in the marijuana user.

Conclusion

Tobacco causes decrease in FEV right away, but marijuana causes an increase in FEV first, and then a decrease in FEV.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Assume that researchers will conduct a community based survey on hypertension. How many participants should be included in the study in order to achieve a 95% confidence level if an error of 5% would be allowable and the estimated proportion of people with hypertension is 20%?
You read a study in which 55 male participants (aged 55-70 years) were assessed for handgrip strength, and changes in cardiovascular health over a 2-year period. In the statistical analysis section of the paper you note that the researchers used regression analysis as the statistical procedure. The researchers identify the independent variable as handgrip strength, and the dependent variable as change in cardiovascular health. What do you think the research question could be?You read a study in which 55 male participants (aged 55-70 years) were assessed for handgrip strength, and changes in cardiovascular health over a 2-year period. In the statistical analysis section of the paper you note that the researchers used regression analysis as the statistical procedure. The researchers identify the independent variable as handgrip strength, and the dependent variable as change in cardiovascular health. What do you think the research question could be? Select one: a. Does handgrip strength…
Look at the question here, ____ Suppose a study looking at the association between smoking and bladder cancer found an odds ratio = 2.4. What would be the best way to interpret this? (Select one answer.) Smokers are 140% times as likely to develop bladder cancer compared to non-smokers. People with bladder cancer are about 40% more likely to be smokers compared to people who don't have bladder cancer. Smokers have a 2.4 % more risk of bladder cancer compared to nonsmokers. Smokers have 2.4 times the risk of developing bladder cancer compared to non-smokers..?
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Case Studies In Health Information Management
Biology
ISBN:9781337676908
Author:SCHNERING
Publisher:Cengage
Text book image
Nutrition Through The Life Cycle
Health & Nutrition
ISBN:9781337919333
Author:Brown, Judith E.
Publisher:Cengage Learning,
How stress affects your body - Sharon Horesh Bergquist; Author: TED-Ed;https://www.youtube.com/watch?v=v-t1Z5-oPtU;License: Standard Youtube License