How Do the Muscles in Your Arm Extend Your Arm

question 53

Multiple Choice

How do the muscles in your arm extend your arm outward?

• A)The muscles in your arm push on the bones, causing your arm to extend.
• B)The muscles in your arm relax, and the tendons pull the arm straight.
• C)Some muscles in your arm relax, and others contract, pulling the arm straight.
• D)The top half of your bicep wraps around underneath the elbow like a rope over a pulley.When it contracts, the arm is pulled out straight.

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Definitions:

Concrete Operational

A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.

Language

A form of communication—whether spoken, written, or signed—that is based on a system of symbols.

Object Permanence

The understanding that objects continue to exist even when they cannot be seen, heard, or touched, a concept important in cognitive development of infants.

Conservation

In cognitive development, the understanding that an object's or substance's quantity does not change despite changes in its shape or form.