If particulate matter (PM) is inhaled, why are periods of high ambient PM levelstypically followed by an increase in hospitalizations for heart attacks a few dayslater?Are NOAEL and LOAEL the same or different? Explain.

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Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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If particulate matter (PM) is inhaled, why are periods of high ambient PM levels
typically followed by an increase in hospitalizations for heart attacks a few days
later?
Are NOAEL and LOAEL the same or different? Explain.

Expert Solution

Step 1

introduction:

A heart attack, also known as a myocardial infarction, is a serious medical condition that occurs when the blood supply to a part of the heart muscle is blocked. This is usually due to a build-up of fatty deposits (plaque) in the arteries that supply blood to the heart (coronary arteries). When a plaque ruptures, it can form a blood clot that blocks the flow of blood to the heart muscle.

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