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  2. Sacral plexus - Wikipedia

    en.wikipedia.org/wiki/Sacral_plexus

    In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg and foot, and part of the pelvis. It is part of the lumbosacral plexus and emerges from the lumbar vertebrae and sacral vertebrae (L4-S4). [ 1 ]

  3. Pelvis - Wikipedia

    en.wikipedia.org/wiki/Pelvis

    The same human pelvis, front imaged by X-ray (top), magnetic resonance imaging (middle), and 3-dimensional computed tomography (bottom). The pelvis (pl.: pelves or pelvises) is the lower part of an anatomical trunk, [1] between the abdomen and the thighs (sometimes also called pelvic region), together with its embedded skeleton [2] (sometimes also called bony pelvis or pelvic skeleton).

  4. Pelvic cavity - Wikipedia

    en.wikipedia.org/wiki/Pelvic_cavity

    The pelvic cavity is a body cavity that is bounded by the bones of the pelvis. Its oblique roof is the pelvic inlet (the superior opening of the pelvis). Its lower boundary is the pelvic floor. The pelvic cavity primarily contains the reproductive organs, urinary bladder, distal ureters, proximal urethra, terminal sigmoid colon, rectum, and ...

  5. Obturator internus muscle - Wikipedia

    en.wikipedia.org/wiki/Obturator_internus_muscle

    It exits the pelvic cavity through the lesser sciatic foramen. The internal obturator is situated partly within the lesser pelvis, and partly at the back of the hip-joint. It functions to help laterally rotate femur with hip extension and abduct femur with hip flexion, as well as to steady the femoral head in the acetabulum.

  6. Levator ani - Wikipedia

    en.wikipedia.org/wiki/Levator_ani

    The levator ani is a broad, thin muscle group, situated on either side of the pelvis. It is formed from three muscle components: the pubococcygeus, the iliococcygeus, and the puborectalis. [3] It is attached to the inner surface of each side of the lesser pelvis, and these unite to form the greater part of the pelvic floor.

  7. Pubic arch - Wikipedia

    en.wikipedia.org/wiki/Pubic_arch

    The pubic arch, also referred to as the ischiopubic arch, is part of the pelvis. It is formed by the convergence of the inferior rami of the ischium and pubis on either side, below the pubic symphysis. The angle at which they converge is known as the subpubic angle. [1]

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  9. Perineal membrane - Wikipedia

    en.wikipedia.org/wiki/Perineal_membrane

    The perineal membrane has two distinct portions that span the opening of the anterior pelvic outlet. [2]The ventral (anterior) portion is associated with the compressor urethra and urethrovaginal sphincter muscles (previously called deep transverse perineal muscles), and is continuous with the insertion of the arcus tendineus fascia pelvis. [3]