As a Result of Aging, New Lymphocytes Continue to Be

question 27

Multiple Choice

As a result of aging, new lymphocytes continue to be produced in the thymus up until the age of 60 years, but they are less effective. Check all reasons they are less effective.

• A)The body's increased reaction to infections can lead to pneumonia.
• B)Helper T-lymphocytes do not respond as well to antigens.
• C)There is a decreased production of B-lymphocytes
• DThe increased production of cytotoxic T-lymphocytes causes the body to over-respond to viruses.

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Definitions:

Internal Reaction

The psychological and emotional response of an individual to external stimuli or events.

External Force

Influences originating outside an individual or system that can affect behaviors, decisions, or change trajectories.

Conscientious

A personality trait characterized by being diligent, careful, meticulous, and responsible.

Perfection

The state or condition of being free from any flaws or defects.