Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 30, Problem 5WIO
Summary Introduction
To determine:
Why some people take low dose of aspirin to help prevent a heart attack. One effect of aspirin is to prevent platelets from sticking together.
Concept introduction:
Heart attack is a result of coronary heart disease is a condition which causes blockage blood flow with in the heart muscle. A blood clot blocks the flow of blood in heart. Blood carries oxygen so due to blockage oxygen is less in body and is serves as fatal for life.
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Chapter 30 Solutions
Biology: Concepts and Investigations
Ch. 30.1 - What are the components of a circulatory system?Ch. 30.1 - Distinguish between open and closed circulatory...Ch. 30.1 - Describe the circulatory systems of fishes,...Ch. 30.2 - What are the components of blood?Ch. 30.2 - Prob. 2MCCh. 30.2 - Prob. 3MCCh. 30.3 - Prob. 1MCCh. 30.3 - Prob. 2MCCh. 30.4 - Why is the heart sometimes called two hearts that...Ch. 30.4 - Prob. 2MC
Ch. 30.4 - Prob. 3MCCh. 30.4 - Prob. 4MCCh. 30.5 - Prob. 1MCCh. 30.5 - Prob. 2MCCh. 30.5 - Prob. 3MCCh. 30.6 - Prob. 1MCCh. 30.6 - Prob. 2MCCh. 30.6 - Prob. 3MCCh. 30.7 - Prob. 1MCCh. 30.7 - Prob. 2MCCh. 30 - What is the advantage of a four-chambered heart?...Ch. 30 - Prob. 2MCQCh. 30 - Which of the following blood transfusions would be...Ch. 30 - Prob. 4MCQCh. 30 - Prob. 5MCQCh. 30 - Prob. 6MCQCh. 30 - Prob. 7MCQCh. 30 - How are open and closed circulatory systems...Ch. 30 - Prob. 2WIOCh. 30 - Prob. 3WIOCh. 30 - Prob. 4WIOCh. 30 - Prob. 5WIOCh. 30 - Describe the events that occur during one cardiac...Ch. 30 - Make a chart that compares systemic arteries,...Ch. 30 - Prob. 8WIOCh. 30 - Prob. 9WIOCh. 30 - Prob. 10WIOCh. 30 - The carotid artery extends from the heart to the...Ch. 30 - Prob. 12WIOCh. 30 - Prob. 13WIOCh. 30 - Name three ways that the circulatory system helps...Ch. 30 - Prob. 15WIOCh. 30 - Prob. 16WIOCh. 30 - Prob. 1PITCh. 30 - Prob. 2PITCh. 30 - Prob. 3PIT
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- Patients with a history of heart failure often get this history from chronic hypertension. Chronic hypertension leads to a condition called hypertrophic heart disease, or hypertrophic cardiomyopathy. This means that the heart muscle gets bigger, allowing less room for it to fill with blood. If these patients take beta blockers, such as metoprolol, it will benefit them because the heart will not overwork and grow in size. However, if a patient has pulmonary edema, how could the beta blocker make this patient worse?arrow_forwardWhy do we need to prevent the decompensated state in patients with heart failure?arrow_forwardBlood is pushed out of the heart through a large vessel, called the aorta. The aorta then divides into smaller and smaller blood vessels, eventually reaching vessels called capillaries. Capillaries are so small that oxygen and nutrients can diffuse across the vessel walls and into the tissues of the body, with CO2 and waste diffusing back into the blood. Let's say that the cross-sectional area of the aorta is 1 cm2 = 100 mm2. The blood pumps through the aorta at 100 mm/s but only through the capillaries at 1 mm/s. If each capillary has a cross-sectional area of 20 mm2, how many capillaries must there be in the body? Note: these numbers are not physiologically correct, but were chosen to make the math easier. The blood velocity through the aorta is closer to 300 mm/s. The capillaries have a total cross-sectional area of ~600,000 mm2 (6000 cm2), with a blood flow rate closer to 0.2 mm/s.arrow_forward
- How important resistance is in heart function? Please give an example. Thank you!arrow_forwardDescribe how aspirin affects the action of platelets.arrow_forwardExplain the association between atherosclerosis and ischemic heart disease. Imagine that you were the Surgeon General of the United States. What types of programs would you advocate to decrease heart disease? Do you think that as a society we should invest resources into the development of stemcell therapies for more effective treatment of myocardial infarction?arrow_forward
- Why should we maintain a patient in a compensated heart failure state?arrow_forwardThrombocythemia is a condition in which the bone marrow makes too many platelets. Is it a cancer? What happens if the platelets count becomes high? Is it possible to bring the level back to normal?arrow_forwardA 50-year-old female patient comes into the physician’s office and states, “People in my family all start to die at 50 from heart disease.” What guidelines can you give her to help prevent the disease? Explain to the patient the symptoms a woman may experience if she is having a heart attack.arrow_forward
- What do you think are the clinical symptoms indicating that a person requires the surgical implantation of a mechanical pacemaker?arrow_forwardA patient suffering from hypertension may receive drugs that decrease the hearts output, dilate arterioles, or increase urine production. In each case, how would the drug treatment help relieve hypertension?arrow_forwardThe heart has its own built-in pacemaker that generates a basic rhythm (heart rate) that the sympathetic and parasympathetic nervous system can change. What is the name of this pacemaker region and where does it sit in the heart?arrow_forward
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