The spelling of the phrase "apertura pelvis inferior" can be explained through the International Phonetic Alphabet (IPA). "Apertura" is spelled as /a.peɾ.ˈtu.ɾa/, where the "a" is pronounced as in "father," the "e" as in "bet," the "ɾ" as a tap between the roof of the mouth and the tongue, and the "u" as in "blue." "Pelvis" is spelled as /ˈpel.vis/, with the "e" pronounced as in "bet" and the "i" as in "it." "Inferior" is spelled as /in.fe.ˈɾjoɾ/, where the "o" is pronounced as in "low."
Apertura pelvis inferior refers to the lower pelvic opening in the human body. It is an anatomical term used in the field of medicine and biology to describe the opening at the bottom of the pelvis. The pelvis is the bowl-shaped structure formed by the hip bones, sacrum, and coccyx, which supports the weight of the upper body and protects the organs in the lower abdominal region.
The apertura pelvis inferior distinguishes the lower part of the pelvis and serves as the gateway for various structures passing through. It is located below the pelvic brim and is bounded by the ischial tuberosities and the inferior tip of the sacrum. This opening facilitates the passage of important structures, including nerves, blood vessels, and the baby during childbirth.
During childbirth, the apertura pelvis inferior widens to accommodate the passage of the fetus through the birth canal. The size and shape of this opening play a crucial role in the successful delivery of a baby, with different dimensions influencing the ease or difficulty of labor.
Understanding the apertura pelvis inferior is critical in obstetrics and gynecology as it helps assess the adequacy of the pelvic dimensions for a safe vaginal delivery. Additionally, knowledge of the features and measurements of this pelvic opening assists in diagnosing certain conditions or abnormalities that may affect reproduction, such as pelvic malformations or narrowness of the birth canal.
Pelvic outlet, the lower opening of the true pelvis, bounded anteriorly by the pubic arch, laterally by the rami of the ischium and the great sacrosciatic ligament on either side, and posteriorly by these ligament on either side, and posteriorly by these ligaments and the tip of the coccyx.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.