The Fingernails and Toenails Consist of What Material

question 36

Multiple Choice

The fingernails and toenails consist of what material?

• A) Keratinized epidermal cells
• B) Collagen
• C) Bone
• D) Elastic fibers embedded with collagen
• E) Pheomelanin and eumelanin

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Definitions:

High Compression Engines

Engines designed with a high ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity, which typically increases efficiency and power output.

Reduction Ratio

The ratio of the output speed to the input speed in a gear system, indicating how much the gear reduces the speed.

Armature Shaft

The rotating shaft part of an electric motor or generator, onto which the armature winding is coiled.

Output Speed

The speed at which a shaft or device is rotating or operating, usually measured in revolutions per minute (RPM) or a similar unit.