Uterus, Ovaries, and Fallopian Tubes: Basic Functions ♀️♻️ . . . . . . The anatomy of the female pelvis is complex and includes several major structures and openings. Here's an overview: Major Structures Pelvic Bones: Ilium: The largest part of the pelvis. Ischium: The lower, back part of the pelvis. Pubis: The front part of the pelvis. Sacrum: The triangular bone at the base of the spine that forms the back of the pelvis. Coccyx: The tailbone, located at the very base of the sacrum. Pelvic Inle