BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
LYMPH NODES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What effect does age have on the size of the thymus?
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The thymus is not affected by age.
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The size of the thymus increases continuously from birth to death.
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The size of the thymus decreases continuously from birth to death.
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The thymus initially increases in size and then decreases in size from adolescence through old age.
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Explanation:
Detailed explanation-1: -Answer and Explanation: The effect that age has on the size of the thymus is that b) The thymus initially increases in size then decreases in size from adolescence through old age. The thymus is largest during the teenage years, and begins a steady decline in size afterwards.
Detailed explanation-2: -After puberty, your thymus gland slowly starts to decrease in size and is replaced by fat.
Detailed explanation-3: -Therefore, thymic involution after puberty is due to the age-related decline of DHEA, which is due to an effect of peripheral T cells, and the program of thymic involution is induced by immune activation throughout an individual’s life.
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