This summary on the gross anatomy of the pelvis and perineum is done in the form of mnemonics according to the theory from Gray's Anatomy for students. These mnemonics contain theory on all structures of the pelvis and perineum including muscles, blood supply, innervation, internal structures and m...
Urination: autonomic control
"When you pee, it's PISs":
Parasympathetic Inhibits Sympathetic.
Spermatic cord contents
"Piles Don't Contribute To A Good Sex Life":
Pampiniform plexus
Ductus deferens
Cremasteric artery
Testicular artery
Artery of the ductus deferens
Genital branch of the genitofemoral nerve
Sympathetic nerve fibers
Lymphatic vessels
Spermatic cord contents
"3 arteries, 3 nerves, 3 other things":
3 arteries: testicular, ductus deferens, cremasteric.
3 nerves: genital branch of the genitofemoral, cremasteric,
autonomics.
3 other things: ductus deferens, pampiniform plexus, lymphatics.
· Note some argument about this: Moore doesn't put in
cremasteric nerve, Lumley puts in inguinal...
Anteflexed vs. anteverted: what bodypart each describes
"Anteflexed and Anteverted both bend toward Anterior".
· The "V" words go together: Verted is for the cerVix (therefore
flexed must be uterus).
Branches of Internal Iliac Artery
, "I Love Going Places In My Very Own Underwear":
Ileolumbar
Lateral sacral
Gluteal (superior and inferior)
Pudendal (internal)
Inferior vesicle (uterine in females)
Middle rectal
Vaginal
Obturator
Umbilical
Ureter to ovarian/testicular artery relation
"Water under the bridge":
The ureters (which carry water), are posterior to the
ovarian/testicular artery.
· Clinically important, since a common surgical error is to cut
ureter instead of ovarian artery when removing uterus.
Pelvis: sacral innervation
"S2,3,4 keeps the 3 P's off the floor (Penis, Poo, and Pee).
· S2,3,4 innervates the anal sphincter, urethral sphicter, and
causes erection.
Sperm pathway through male reproductive tract
"STaRT DEEP--VD!":
· Sperm duct system progression, from smallest to largest:
ST: Seminiferous Tubules
RT: Rete Testes
DE: Ductus Efferentes
EP: Epididymis
VD: Vas Deferens
Obturator canal: relations of structures
"Who's flying in the top of Obturator canal? Obviously Not A
Vein!":
Obturator
Nerve
Artery
Vein
Female pelvic organs' blood supply
"3 organs, each get 2 blood supplies":
Uterus: uterine, vaginal.
Rectum: middle rectal, inferior rectal [inferior rectal is the end of
pudendal].
Bladder: superior vesical, inferior vesical.
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