Which term describes the boundary of the pelvic inlet?

Which term describes the boundary of the pelvic inlet?

• A. Pelvic Inlet
• B. Iliac Crest
• C. ASIS
• D. Pubic Symphysis

Answer: (A)

In pelvic anatomy, the edge that defines the opening into the true pelvis is the pelvic brim. This boundary runs from the sacral promontory posteriorly, along the ala of the sacrum and the arcuate line, then across the pectineal line to the pubic crest anteriorly. The term pelvic inlet refers to the opening itself, not its boundary. The other landmarks mentioned are specific bony points or borders that aren’t the boundary of the inlet: the iliac crest is the top edge of the ilium, the ASIS is a prominent anterior point on the ilium, and the pubic symphysis is the front joint where the two pubic bones meet.

In pelvic anatomy, the edge that defines the opening into the true pelvis is the pelvic brim. This boundary runs from the sacral promontory posteriorly, along the ala of the sacrum and the arcuate line, then across the pectineal line to the pubic crest anteriorly. The term pelvic inlet refers to the opening itself, not its boundary. The other landmarks mentioned are specific bony points or borders that aren’t the boundary of the inlet: the iliac crest is the top edge of the ilium, the ASIS is a prominent anterior point on the ilium, and the pubic symphysis is the front joint where the two pubic bones meet.