👉 Setoplectus is a type of vertebrate organ in the human body, specifically found in the lower abdomen and the lower part of the pelvis. It's named for its distinctive appearance, which includes a large, circular sac that resembles a small pocket or ball. The setoplectum is composed of several parts: the mesentery (the tissue lining the cavity), the internal vesicle (a fluid-filled chamber within the sac), and the external vesicles (several small openings
