Define Vasoconstriction, and Describe Its Role in the Human Physiological

question 70

Essay

Define vasoconstriction, and describe its role in the human physiological response to cold.

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Definitions:

CO

Carbon monoxide, a colorless, odorless gas formed by incomplete combustion of carbon-containing materials, toxic to humans and animals when inhaled.

Carboxyhemoglobin

A complex formed by the binding of carbon monoxide to hemoglobin, which can impede the blood's ability to transport oxygen.

Hemoglobin

A protein in red blood cells that carries oxygen from the lungs to the rest of the body and returns carbon dioxide to be exhaled.

Oxygen

A chemical element (O) that is a highly reactive nonmetal, essential for most forms of life on Earth, and a key component of the atmosphere.