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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 |