The Bones, Which Serve as Levers in the Body, Direct

question 106

Multiple Choice

The bones, which serve as levers in the body, direct

• A) the direction of movement.
• B) the distance and speed of movement produced by a force.
• C) the effective strength of a force.
• D) all of the above
• E) none of the above

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Definitions:

Friction

The resistance encountered when one object is moved in contact with another.

Pressure

The force exerted per unit area on the surface of an object, often measured in atmospheres, Pascals, or mmHg.

Callus

Thickened area of skin caused by repeated friction or pressure, or the healing tissue over a bone fracture.

Cyanosis

A bluish or purplish discoloration of the skin and mucous membranes due to insufficient oxygen in the blood.