The Toxicity of Cyanide Is Due to Its Affinity for the

question 26

Multiple Choice

The toxicity of cyanide is due to its affinity for the

• A) (-SH groups of enzymes.)
• B) carboxyl groups of active sites.
• C) iron atoms of cytochrome oxidase.
• D) amino groups of hemoglobin.

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Definitions:

Aortic Semilunar

Refers to the aortic semilunar valve in the heart, which prevents blood from flowing back into the left ventricle from the aorta.

Endocardium

The innermost layer of tissue that lines the chambers of the heart, providing a smooth surface for blood flow.

Epicardium

The outermost layer of the wall of the heart. Also known as the visceral pericardium.

Pericardium

A membrane that covers the heart and large blood vessels attached to it.