The Physical Changes That Occur Naturally as a Result of the Aging

question 15

Multiple Choice

The physical changes that occur naturally as a result of the aging process often create an autonomy versus safety issue and are most problematic when

• A)protracted reaction time increases the risk for driving accidents.
• B)arthritic knee and hip joints make falls more prevalent.
• C)eyesight diminishes,making following written instruction more difficult.
• D)responding to warning alarms is affected because of impaired hearing acuity.

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Definitions:

Sample Proportions

A statistic that describes the fraction of items in a sample that meet a certain criteria, often used to estimate the proportion in the total population.

Population Proportions

A rephrased definition: The fraction of individuals in various categories relative to the total population under study.

Cardiac Conduction

The process of electrical signal transmission through the heart, coordinating its beating.

AV Node

The atrioventricular node, a part of the electrical conduction system of the heart that coordinates the top of the heart. It acts as an electrical relay station, slowing the electrical current sent by the sinoatrial node before the signal is permitted to pass down through to the ventricles.