Where does the true pelvis lie in relation to the false pelvis?

The true pelvis is located below the false pelvis. Understanding the anatomical distinctions between these two regions is crucial in the context of obstetrics and gynecology. The false pelvis, also known as the greater pelvis, is the broader, upper part of the pelvic cavity, which is located above the pelvic brim and is primarily associated with supporting the intestines and the lower part of the abdominal organs.

In contrast, the true pelvis, or lesser pelvis, is the area below the pelvic brim that plays a significant role during childbirth. It is defined by the pelvic inlet at the top and the pelvic outlet at the bottom. The structure of the true pelvis is particularly important for midwives and healthcare providers as it determines the dimensions and shape required for adequate labor and delivery. The positioning of the true pelvis directly beneath the false pelvis is essential for recognizing the space available for the descent of the fetus during labor.