Question

Which ureter is typically enlarged to a greater degree in pregnancy?

1) Right ureter
2) Left ureter
3) Both ureters
4) Neither ureter

Answer 1

In pregnancy, the right ureter is typically enlarged to a greater degree due to compression from the enlarging uterus, leading to hydronephrosis.

Step-by-step explanation:

The ureter that typically becomes enlarged to a greater degree during pregnancy is the right ureter. This occurs because the right ureter is more susceptible to compression from the enlarging uterus as the right ovary is located slightly lower in the abdomen compared to the left. This compression can lead to the dilatation of the right ureter, also known as hydronephrosis of pregnancy. On top of that, the growing uterus exerts downward pressure which compresses the urinary bladder, leading to frequent urination. Moreover, the maternal urinary system is tasked with processing both maternal and fetal wastes, further increasing the total volume of urine.