Pelvic Neurovasculature Flashcards
Categories of pelvic fascia
Membranous
Endopelvic
Tendinous arch only in males
Puboprastatic
Fascia located between parietal & visceral membranous layers of pelvic fascia
Endopelvic fascia (“packing material”)
Function of sympathetics in pelvis
Vasoconstriction
Inhibit peristalsis of rectum
Constrict involuntary sphincters (internal anal, internal urethral)
Normal tone of internal sphincters
Stimulates contraction of internal genital organs (ejaculation)
Function of parasympathetics in pelvis
Increase peristalsis (contraction of rectum)
Inhibits constriction of involuntary sphincters
Stimulates contraction of detrussor muscle (bladder)
Erection
Superior hypogastric plexus composition
Pre- & Post-ganglionic sympathetics (mostly pre)
Visceral afferents
No parasympathetics
Inferior hypogastric plexuses composition
Pre- and Post-ganglionic sympathetics (mostly post)
Pre-ganglionic parasympathetics
Visceral afferents
Plexuses of the lesser pelvis in males and females:
Males: prostatic, vesical, rectal
Female: vesical, uterovaginal, rectal
Components of plexuses in the lesser pelvis
Post-ganglionic sympathetics
Pre-ganglionic parasympathetics
Visceral afferents
Pelvic splanchnics supply:
Supply all pelvic viscera
Supply erectile tissue of perineum
Supply abdominal viscera supplied by IMA
Visceral pain referred to: (covered in peritoneum and subperitoneal)
Covered in peritoneum: Travel retrograde with sympathetics retrograde to T11-L1
Subperitoneal: Travel retrograde with parasympathetics to dorsal root ganglia S2,3,4
Visceral reflex travels:
Retrograde with parasympathetics to dorsal root ganglia S2,3,4
