Fires Are Classified According to Their Properties, Which Relate to the Nature

question 6

Multiple Choice

Fires are classified according to their properties, which relate to the nature of the fuel. What class of fire has a metal fuel?

• A) Class A
• B) Class B
• C) Class C
• D) Class D

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Definitions:

Dense Irregular Connective Tissue

Connective tissue composed of collagen fibers arranged in a random, interwoven manner, providing strength and support in multiple directions.

Tunica Media

The middle layer of the walls of arteries and veins, composed mostly of smooth muscle and elastic fibers, playing a key role in regulating blood pressure and flow.

Valves

Structures in the heart and veins that maintain blood flow in a single direction, preventing backflow.

Pulmonary Capillaries

Pulmonary capillaries are the tiny blood vessels located in the lungs that surround the air sacs (alveoli), where the exchange of oxygen and carbon dioxide takes place between the bloodstream and the lungs.