Topics from UMichigan Flashcards
occlusion of the urethra would occur in which part of the prostate?
the periurethral zone - hyperplasia there would occlude the prostatic urethra
what is the structure in females that is anterior to the rectum and firm, protruding into the vagina?
cervix
the most inferior extent of the peritoneal cavity?
rectouterine pouch
when the ductus deferens is ligated, what would remain in the ejaculate?
seminal fluid and prostatic fluid
ovarian artery
has branches that also supply the uterus (anastamose with uterine artery)
inferior vesical artery
supplies the inferior bladder (in males only); anastamoses with the middle rectal artery
internal pudendal artery
supplies the perineum
ovarian ligament
tethers the ovaries to the uterus.
what is homologous to the male scrotum in females?
labia majora
pelvic splanchnic nerves
preganglionic, parasympathetic fibers from the lateral horn of S2-4 –> go to the inferior hypogastric plexus (along with the lumbar and sacral splanchnics) to provide parasympathetic innervation to pelvic viscera and GI tract distal to left colic flexure
parasympathetic innervation to the gut (up until the left colic flexure)
posterior vagus nerve
Boundaries of the perineum:
anterior: pubic symphysis
anterolateral: ischiopubic rami
lateral: ischial tuberosities
posterolateral: sacrotuberous ligaments
posterior: coccyx
perineal body
(only in females) irregular fibromuscular mass at the center of the body of the perineal membrane
**site of meet up of the external anal sphincter, bulbospongiosus, and superficial and deep transverse perineus muscles
where do the bulbs of the vestibule/ bulb of the corpus spongiosum attach?
perineal membrane
ejaculatory duct
courses through the prostate gland and contains only semen which is
- sperm from ductus deferens
- seminal fluid from seminal vesicles
- prostatic fluid from prostate gland
what are the erectile bodies in men?
2 corpora cavernosa
1 corpus spongiosum
what are the erectile bodies in women?
2 crura of the clitoris
2 vertibular bulbs
the four portal-caval anastamoses
- superior rectal –> inferior rectal
- esophageal (L. gastric) –> esophageal (azygous)
- paraumbilical –> veins of the anterior abdominal wall
- colic –> retroperitoneal
posterior recess of the ischioanal fossa
extends deep to the sacrotuberous ligament
when doing a pudendal nerve block, what bony landmark should be palpated?
ischial spines
what nerve mediates erection?
pelvic splanchnics (parasympathetic). in males, contribue to prostatic plexus
where does the inferior rectal vein drain into?
the internal pudundal vein
what lymphatic node drains the perineum and external genitalia (labia majora and scrotum)
superficial inguinal lymph nodes
where do the testes and ovaries drain?
lumbar nodes