This Figure Shows a Normal Electrocardiogram

question 47

Multiple Choice

This figure shows a normal electrocardiogram.Missing of waves at point might indicate SA node damage.

• A)1
• B)2
• C)3
• D)4
• E)5

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Definitions:

Pollutants

Substances that contaminate the environment, causing harm or discomfort to organisms.

Montreal Protocol

An international treaty designed to protect the ozone layer by phasing out the production of numerous substances responsible for ozone depletion.

Ozone-Destroying Chemicals

Substances, such as chlorofluorocarbons (CFCs), that break down the ozone layer in the stratosphere, leading to ozone depletion.

Ground-Level Ozone

A harmful air pollutant formed by the reaction of sunlight with pollutants such as nitrogen oxides and volatile organic compounds, contributing to smog and adverse health effects.