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:

Probability Density Function

A function that describes the likelihood of a continuous random variable falling within a particular range of values.

Uniform Random Variable

Represents a variable that has a uniform distribution over a certain interval, meaning each value within the interval is equally likely to occur.

Probability Density Function

A function that describes the relative likelihood for a continuous random variable to occur at a point in the possible range of values.

Uniform Random Variable

A type of continuous random variable where all intervals of the same length have an equal probability of occurring.