Internal Male genetalia Flashcards
Parietal vascia is contunies with what structures
Continum of ther Transversalis fascia of the abdomen wall and is continuous with the visceral fascia that reflects on to the pelvic organs
what fascia covers the obturator internus
parietalpelvic fascia
what fascia forms the thickened tendinous arch at the superior edge of the levator ani muscle
parietal pelvic fasciae
visceral part of the pelvic fascia is continous with
parietal part of the pelvic fascae
what ligament is formed by the visceral part of the pelvic fascia in males
puboprostatic ligament
puboprostatic ligament
formed from visceral fascia that forms a sling around the proximal sphincter and neck of bladder and attaches to the prostate to bone
endopelvic fascia
loose areolar layer, fatty tissue lymphatics and vessels that fills the gaps between parietal and visceral and the pelvic walls. Also foms septa between ogans
which teste is usually lower
left is usually lower than the right
scrotal ligament
attaches teste to scrotum and is a remnant of the gubernaculum
what fascial layer surrounds the teste
tunic albuginea
rete teste
collecting chamber to which the seminiferous tubules open into
what connects the rete teste to the epididymis
efferent ductules
epididymis is attached where on testes
posterior side of testis. Compacted into head, body, and tail
the tail of the epidymis is continuous with what structure
ductus/vas deferens
Testicular arteries course
branch off aorta just below the renal arteries and through the inguinal canal in the spermatic cord
left papiniform vein drains to
left renal vein
right papiniform vein drains to
inferior vena cava
lymphatic drainage of testes
follows veins to lumbar and preaortic lymph nodes to eventually reach cisterna chyli and throacic duct
where is the testicular plexus loacted
on the testicular artery - convey vagal parasympathetic, visceral afferent fibers, and sympathetic fibers from T10-T11 levels
internal spermatic fascia is derived from
transversalis fascia
cremasteric fascia is derived from
internal oblique muscle
external spermatic fascia derived from
external oblique muscle
contents of the inguinal canal
spermatic cord, ilioinguinal nerve, genital branch of genitofemoral nerve
contents of the spermatic cord
ductus /vas deferens, testicular artery, pampiniform plexus of veins, lymphatics, autonomic nerves to testis
ductus deferens course
continuation of the epidydymis which then enters the abdominal cavity via the deep ring, crosses anterior to the iliac vessels to enter the pelvis remaining external to the peritoneum, crosses anterior to the ureterto reach the base of the bladder where it enlarges into ampulla of the ductus deferens
relationship of the ampulla to the seminal vesicles
ampulla lies superior to the seminal vesicles then narrows into a duct to turn inferiorly and joins the duct of the seminal vesicle to form the ejaculatory duct
ductus deferens crosses ___ to the ureter
anterior
ductus deferens crosses ___ to the external iliac vessels
anterior
what structures form the ejaculatory duct
ampulla of the ductus deferens and the seminal vesicle
Dennoviller’s Fascia
Also called the retroprostatic fascia - separates the rectum from the bladder
what structures are associated with the base of the bladder in males
2 ureters, 2 ductus deferens and 2 seminal vessicles. Separated from the rectum by Denonvilliers (retroprostatic fascia)
what part of the bladder sits atop the prostate gland
the neck of the bladder
boundaries of the trigone
triangular arrea formed by 2 openings fo the ureters and the internal orifice of the urethra
Prostate: Periurethral zone
surrounds the prostate urethra
Prostate: central zone
surrounds ejaculatory ducts. Along with periurethral and transition zones yielfs 20% of glandular tissue of prostate
Prostate: Peripheral zone
70% of glandular tissue of the prostate, closest to the recutm (can be felt on rectal exam) 75% of prostatic tumors found within this zone
in which prostate zone are most tumors found
75% are found in the peripheral zone
Prostate Transition zone
5% mass at puberty then grows with age, 10-20% of prostate tumors originate in this zone
Prostate: Anterior zone
about 10% of the glandular tissue of the prostate
describe the features of the prostatic urethra
Urethral crest is found on the posterior surface srurrounded by prostatic sinus on both sides where prostatic ducts open into the urethra. Enlarges 2/3 of the distance down to form the seminal colliculus (mound) that has a bind opening in the center (utricle)
where doe the ejaculatory ducts open into the urethra
inferolateral to the utricle on the seminal colliculus
which portion of the urethra has the thinnest walls
membranous urethra
what is the narrowest/least expandable part of the urethra
external urethral orifice
bulbourethral (Cowpers glands)
embedded in the deep perioneal pouch lateral to the membranous urethra. Their associated ducts pass into the bulb of the penis to dump lubricating, pre-ejactulate into the spongy urethra
what is the homolog of bulbourethral glands in females
greater vestibular glands in females
Superior vesical arteries
branches off the umbilical artery to the superior surface of the bladder and some of the ductus deferens
Middle vesical Arteries
called the deferntial artery to the ductus deferens that usually arise from the umbilical artery close to its origin
Inferior Vesical Arteries
branches of internal iliac artery. Supply inferior aspect of the bladder, the prostate, seminal vesicvles, some ductus deferens and proximal urethral
artery to the ductus deferens
comes from superior or inferior vesical artery from internal iliac artery
generally, where do structures of internal male genetalia drain
to the vesical veous plexus or associated prostatic plexus - drains to internal ilaic veins which communicates with internal vertebral venous plexus through valveless channels
venous drainage of ductus deferens
vesical venous plexus and testicular vein (papiniform plexus)
lynphatic draingae of the superior portion of the bladder
exteral iliac nodes
lymphatic drainage of the neck of the bladder
internal iliac nodes
lymphatic drainage of te neck of the bladder
internal ilialc nodes
lymphatic drainage of the seminal vessivels
internal iliac nodes
lymphatic drainage of the prostate
internal iliac nodes
parasympathetic innervation levels
S2-S4 (Pelvic Splanchnic Nerves)
innervation of the prostate
prostatic plexus derived from inferior hypogastric plexus - innervation via sympathetic fibers
innervatio of the bladder
Sympathetc through both hypogastric plexuses and nerves (sympathetic for ejaculation also stimulate sinternal urethral sphincter to stop reflux of semen into the bladder) Parasympathic through pelvic splanchnic nerves and inferior hypogastric plexus (motor to detrusor and inhibition to internal urethral sphincter)
