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Pelvis & Perineum
Oneliners for Pelvis
| Question | Answer |
|---|---|
| Structure that separates pelvis from perineum | Pelvic diaphragm |
| Two major components of pelvic diaphragm | Levator ani and coccygeus |
| Two major components of levator ani | Pubococcygeus and iliococcygeus |
| Two muscles which close lateral pelvic wall | Obturator internus and piriformis |
| Means by which obturator internus exits pelvis | Lesser sciatic foramen |
| Means by which piriformis exits pelvis | Greater sciatic foramen |
| Innervation of detrusor | Pelvic splanchnics (S2-4) |
| Innervation of trigone | Sympathetics (Pregang. T11-L2; lesser, least, lumbar splanchnic nn.) |
| Innervation of sphincter urethrae | Pudendal n. (S 2,3,4) |
| Remnants of umbilical arteries | Medial umbilical ligaments |
| Provides major vasculature to pelvic organs | Internal iliac |
| Chief artery to rectal mucosa | Superior rectal |
| Chief artery to rectal muscular wall | Middle rectal |
| Most common type of pelvic inlet in females | Gynecoid |
| Two remnants of gubernaculum in females | Ovarian and round ligament |
| Ligament that contains ovarian vessels | Suspensory ligament of ovary |
| Cavity into which ova immediately escape the ovary | Peritoneal |
| Lymphatic drainage for ovary and testes | Lumbar nodes (para-aortic) |
| Normal position of uterus | Anterverted, anteflexed |
| Name given to orientation where uterus and vagina intersect at angle of 90 degrees | Anteversion |
| Name given to orientation where uterine body and cervix intersect at angle of 10-15 degrees | Anteflexion |
| Chief uterine support | Pubococcygeus |
| Ligament that contains uterine vessels | Lateral cervical |
| Structure potentially injured with hysterectomy | Ureter |
| Relation of ureter to uterine artery | Inferior and posterior |
| Structure that separates deep and superficial perineal spaces | Perineal membrane |
| Bony landmarks between anal and UG triangles | Ischial tuberosities |
| Structure forming lateral wall of ischioanal fossa | Fascia of obturator Internus |
| Structure that forms the pudendal canal | Fascia of obturator Internus |
| Structure that separates internal and external hemorrhoids | Pectinate line |
| Lymphatic drainage for area superior to pectinate line of anal canal | Internal iliac, inferior mesenteric nodes |
| Lymphatic drainage for area inferior to pectinate line of anal canal | Superficial inguinal nodes |
| Lymphatic drainage for glans penis | Deep inguinal nodes |
| Muscle which compresses the bulb of penis | Bulbospongiosus |
| Muscle which compresses the crus of penis | Ischiocavernosus |
| Nerves of erection | Pelvic splanchnic, nervi erigentes (S 2,3,4) |
| Muscles which meet at the perineal body | Superficial and deep perineal, bulbospongiosus, external anal sphincter, pubococcygeus |
| Major structure of deep perineal space | Sphincter urethrae |