Answer:
In pregnancy, WBC count begins to rise in the first trimester and peaks in the third trimester, with a normal range of variation.
Step-by-step explanation:
During pregnancy, the white blood cell (WBC) count experiences changes as the body adapts to the growing fetus. In the first trimester, there is a subtle increase in WBC count, which becomes more pronounced in the second trimester. However, the peak occurs in the third trimester, representing the body's response to the increased demands and potential stress associated with the advanced stages of pregnancy.
This rise in WBC count is a normal physiological response to support the immune system during pregnancy. It is essential for protecting both the mother and the developing fetus from infections. While there is a general pattern of increase, individual variations are common, and healthcare providers monitor WBC levels to ensure they remain within a normal range.