Which of These Is a Criterion of the Formal Definition

question 107

Multiple Choice

Which of these is a criterion of the formal definition of intellectual disability?

• A) IQ below 70
• B) Evidence of brain damage
• C) Slower than normal reflexes
• D) Onset of deficits prior to age six

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Definitions:

Actin

A globular multi-functional protein that forms microfilaments, playing a key role in muscle contraction, cell motility, and the cell's structural framework.

AV Node

The atrioventricular node is an element of the heart's conduction system that regulates heart rate by decelerating the electrical impulse prior to its transfer from the atria to the ventricles.

Action Potential

Change in membrane potential in an excitable tissue that acts as an electric signal and is propagated in an all-or-none fashion.

Atria Contract

refers to the phase in the cardiac cycle when the atria (upper chambers of the heart) contract to push blood into the ventricles.