male reproductive system Flashcards
parts of penis
- paired corpora cavernosa
- corpus spongiosum
- glans penis
- crura and bulb
blood supply to penis
- internal pudendal
- external pudendal (skin)
- dorsal arteries
- deep dorsal vein
blood supply to scrotum
ant: external pudendal
post: internal pudendal
nerve innervation to scrotum
ant: ilioinguinal and genital branch of genitofemoral
post: posterior scrotal
where does the left tesitcular vein drain
left renal vein
nerve innervation of prostate gland
symp: inferior hypogastric pleuxs
parasymp: pelvic splanchnic
route of sperm
seminiferous tubules in testes -> epididymis -> ductus deferens -> prostate -> ejaculatory duct -> prostatic urethra -> membranous urethra -> penil/spongy urethra
steps of erection
- parasymp stim of cavernous verse from prostatic nerve plexus
- bulbospongiosa and ischiocavernosa contract at base impedeing blood flow
steps of emission
delivery of semen to prostatic urethra by ductus deferens
steps of ejaculation
- closure of internal urethral sphincter at neck of bladder
- contraction of smooth muscle in prostate and urethra
- contraction of bulbospongiosa muscle
what makes up the spermatic cord
- ductus deferens
- testicular artery
- pampiniform plexus
where does the prostatic venous plexus drain
- internal iliac vein
- possibly vertebral venous plexus