END 1 Lab 3: Female Pelvis and Genitalia

Pelvis and Perineum: Module 1 - Page 3 of 5

	Return to the view of the full pelvis to reestablish spatial orientation.
	Add the psoas major muscle.

The psoas major originates from the lateral surfaces of the T12-L5 vertebrae and descends in the pelvis, where it joins the iliacus. Together, they pass deep to the inguinal ligament. Since they share a common insertion on the lesser trochanter of the femur, they are sometimes collectively referred to as the "iliopsoas muscle" in this region.

	Add the iliacus muscle to complete the formation of the iliopsoas. The iliacus originates from the iliac fossa and converges with the psoas major to form the iliopsoas, the primary flexor of the hip.
	Rotate the pelvis superiorly to view and inferior (pelvic outlet) view.
	Add the levator ani muscle group. Look and adjust the cross section windows to fully appreciate the extent, curvature, and attachments of these muscles which form the bulk of the pelvic diaphragm.

	What three (3) muscles make up the levator ani?
The puborectalis muscle The pubococcygeus muscle The iliococcygeus muscle Since the levator ani is difficult to divide into its components, use the following representation to get a sense of where these components are positioned.