There are two (males) or three (females) openings that allow passage of the outlet components of the pelvic viscera in the pelvic floor. The lower part of the pelvis is sealed off by a muscular diaphragm and perineal membrane known as the pelvic floor. The muscles that are up for discussion are those that form the lower limit of the true pelvis and have attachment only to structures within the bony pelvis. The piriformis and obturator internus muscles will not be discussed in great detail as they are primarily muscles of the lower limb. These and other questions will be addressed as we discuss the gross anatomy and function of the muscles of the pelvic floor. Helps maintain continence (both urinary and fecal) Hypaxial division of the sacrococcygeal myotomeĬhildbirth – supports and guides the presenting fetal part Midline – fibers form a midline levator rapheīranches of the anterior division of the internal iliac artery: inferior vesical, pudendal, inferior glutealĭirect branches from S4 (nerve to levator ani) Posteriorly – attached to the caudal sacrum and coccyxĪnteriorly – attached to the posterior surface of the pubis Posterolaterally – attached to the ischial spine Laterally – attached to the tendinous arch of levator ani Pubococcygeus can be further separated into – puboperinealis, puboprostaticus (male), pubovaginalis (female), puboanalis Key facts about the muscles of the pelvic floorĪ variably thick muscular membrane called a diaphragmĬoccygeus and levator ani muscles ( iliococcygeus, puborectalis, pubococcygeus) What is the best exercise for the pelvic floor?.What arteries and nerves supply the muscles of the pelvic floor?.

Which muscles make up the pelvic floor?.On that topic, there are several important questions that need to be answered: The main focus of this article will be the pelvic floor muscles. It is a basin-shaped muscular diaphragm that helps to support the visceral contents of the pelvis. The pelvic floor is primarily made up of thick skeletal muscles along with nearby ligaments and their investing fascia. Pubovisceral muscle, Musculus pubovisceralis

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