The Pelvic Wall Anatomy
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| What are the general locations of the false pelvis? The true pelvis? | show 🗑
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| What are the borders of the true pelvis? | show 🗑
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| show | The Pelvic Diaphragm
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| show | Pubic bone, pubic symphisis
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| show | Hip bone below the pelvic inlet, obturator membrane, obturator internus muscle (N. nerve to obturator internus), A. laterally rotates thigh)
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| show | Sacrum and coccyx; piriformis muscle (N. nerve to the piriformis, A. laterally rotates thigh).
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| What is the obturator membrane? | show 🗑
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| This ligament extends from the lateral part of the sacrum and coccyx to the ischeal tuberosity | show 🗑
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| show | Sacrospinous ligament
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| What are the functions of the sacrotuberous and the sacrospinal ligaments? | show 🗑
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| What muscles comprise the pelvic diaphragm? | show 🗑
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| What structures pass through the diaphragm? | show 🗑
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| Where is the diaphragm incomplete? Why? | show 🗑
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| show | Pelvic surface: ventral rami of S3 and S4; Perineal surface: perineal branch of the pudental nerve
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| show | Parietal pelvic fascia, visceral pelvic fascia, and superitoneal fascia
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| Describe the parietal pelvic fascia | show 🗑
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| What is the arcus tendinous? | show 🗑
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| show | Looser connective tissue investing the pelvic viscera (bladder, vagina, uterus, rectum)
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| show | Continued extraperitoneal fascia from abdomen into pelvis; condensation of the fascia form ligaments (e.g. Females have pubovescial, transverse cervical [Mackenrodt's], and sacrouterine ligaments); ligaments blend with parietal and visceral fascia
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| Describe the blood supply of the major branching/branches of the common iliac artery | show 🗑
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| show | Continues the path of the common iliac artery along the pelvic brim
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| show | Passes down into pelvis and contributes most of blood supply to the pelvis EXCEPT for ovarian artery, superior rectal artery, median sacral artery
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| show | OA (branch of the abdominal aorta), SRA (terminal branch of the inferior mesenteric artery), and MSA (branch of the abdominal aorta
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| Describe the path and the divisions of the internal iliac artery | show 🗑
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| show | Ascends along lumbosacral trunk in front of ala of sacrum; often separates lumbosacral trunk from obturator nerve medial to the psoas major m., supplies iliacus and psoas major m.
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| What are the (3) major branches of the posterior division of the internal iliac artery? | show 🗑
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| Describe the path of the lateral sacral arteries | show 🗑
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| Describe the path and areas supplied by the superior gluteal artery | show 🗑
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| show | Umbilical artery, obturator artery, inferior vesical artery, middle rectal artery, uterine artery, vaginal artery, internal pudental artery, inferior gluteal artery
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| show | gives off superior vesical arteris (supplies urinary bladder) and continues forward as the medial umbilical ligament
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| Describe the path of the obturator artery; what is an anomalous obturator artery and why is it significant? | show 🗑
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| Describe the path / area supplied by the inferior vesical artery (males only) | show 🗑
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| show | Actually supplies reproductive organs
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| Describe the areas supplied by the uterine artery | show 🗑
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| show | homolog of inferior vesical artery in the male; runs to the side of the vagina and then descends into perineum; helps supply the bladder
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| Describe the path and area supplied by the internal pudental artery | show 🗑
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| Describe the path and area supplied by the inferior gluteal artery | show 🗑
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| Describe the veins of the pelvis (briefly) | show 🗑
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| What nerves comprise the sacral plexus | show 🗑
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| show | GReater sciatic foramen
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| What is the lumbosacral trunk? | show 🗑
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| show | (S2-S4) and internal pudental vessels: exit via greater sciatic foramen below the piriformis m., hooks around sacrospinous ligament; enters perineum via lesser sciatic forament and enters pudental canal along wall of ischiorectal fossa
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| show | Preganglionic parasympathetics from S2 - S4
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| Where does the obturator nerve originate from? | show 🗑
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| Describe the path of the pelvic sympathetic trunk | show 🗑
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karkis77
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