The Common Designation of Age 65 as the Beginning of Old

question 15

Multiple Choice

The common designation of age 65 as the beginning of old age is based largely on:

• A) the average age of retirement in the United States.
• B) the individual aging process that lowers productivity after age 65.
• C) historical custom. 335)
• D) the proportion of people alive past that age.

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Definitions:

Fascicle

A bundle of skeletal muscle fibers surrounded by connective tissue, contributing to the structure and function of muscles.

Neurofibrils

Fine, thread-like structures within neurons that provide support and nutrient transportation throughout the nerve cell.

Node of Ranvier

Gaps in the myelin sheath of a nerve fiber, allowing for rapid conduction of nerve impulses.

Telodendria

The fine, branching extensions at the end of axons, which help in transmitting neural signals to other neurons or muscles.