Questions: Question 20 2 pts Which is not an age-related change to the immune system? B cell production decreases number of dendritic cells decreases macrocyte function is decreased skin becomes thicker

The answer is the last one: skin becomes thicker.

Explanation for each option:

• B cell production decreases: This is an age-related change. As people age, the production of B cells, which are crucial for the adaptive immune response, tends to decrease.
• Number of dendritic cells decreases: This is also an age-related change. Dendritic cells, which are important for antigen presentation and initiating immune responses, tend to decrease in number with age.
• Macrocyte function is decreased: This is an age-related change as well. The function of macrophages, which are essential for phagocytosis and initiating immune responses, tends to decline with age.
• Skin becomes thicker: This is not an age-related change. In fact, with aging, the skin typically becomes thinner, not thicker.

Summary: The correct answer is that skin becomes thicker, which is not an age-related change to the immune system.