pack Flashcards
What are the lobes of the prostate?
Anterior: (isthmus)
Median
Posterior: Right and left lobes
What are the 4 zones of the prostate?
Anterior
Transtion
Central
Periphral
Where does prostatic cancer usually begin?
In the posterior lobe of the prostate.
Why does prostatic cancer metastize to the vertebrea and the brain?
Because of the fact that the prostatic venous plexus and the vertebral venous plexus are connected via sacral veins.
What is bengin prostatic hyperplasia?
The non-cancerous abnormal growth of the prostate
What exam is used to diagnoss bengin prostatic hyperplasia?
Digtal rectal exam
What lobe and zone of the prostate does bengin prostatic hyperplasia usually happen in?
Zone: Transtion zone
Lobe: Median Lobe
What does bengin prostatic hyperplasia cause?
urethral obstruction, which leads to:
Nocturia
dysuria (difficulty and/or pain during urination), and
urgency
(sudden desire to void)
What are the three ways that a prostatectomy can be performed?
A prostatectomy may be performed
through a suprapubic [1] or
perineal [2] incision or transurethrally [3]
What are the nerves in the capsule of the prostate?
Cavernosus
If the cavernosus nerves were damaged, what would happen?
Erectaile dysfunction (Impotence) and Urinary incontinece
What nerves are in risk of damage in case of intensive dissection of pelvic lymph nodes (prostatic cancer ectomy)? What would this effect?
Pelvic splanchic nerves
autonomic innervation of derivate of hindgut may be affected
What are the three parts of the urethra?
Prostatic
Membranous
Spongy
What are the charactersitics of the prostatic urethra?
Widest and most dilatable part (makes sense since it is under the bladder)
Shape: Spindle shape
posterior wall presents the following
features: Seminal Colliculus
2 ejaculatory ducts
Ducts of the prostate
What are the features of the membranous urethra? What does it pass through?
Passes through the: Urogenital diaphragm to enter the bulb of the penis
Narrowest and least dilatable part
It is surrounded by the external spintcher (bc it is under the prostate)
Bulbourethral glands
lie posterolateral to this
part inside of urogenital diaphragm (deep
perineal pouch)
What are the charactersitics of the spongy urethra?
Longest part of the penis
Passes through the bulb and corpus sponiosum to open at the external urethral orfice on the tip of the glans penis.
There are two dilatations bulbar fossa (in the
beginning) and navicular fossa (in the glans penis)
Ducts of the
bulbourethral glands open into the floor of the
spongy part in its beginning
What nerve is the external urethral spintcher supplied by?
perineal branches of the pudendal nerve
What are the characterstics of the female urethra?
Starts at the neck of the bladder at the internal urethral orifice (internal urethral spintcher) continues till it reaches the external urethral spintcher and deep and superficial perineal pouches opens by the external urethral orifice.
