Male Pelvic Cavity Flashcards
3 Erectile Tissue forming the penis
Bulb of the penis
Crus of penis (2)
Enzyme marker for prostate cancer found in blood examination
Acid phosphatase
Normal weight of prostate
8g
What separates the rectum from the seminal vesicle
Denonvillier’s fascia
Lymph from the prostate gland drains in
External iliac nodes
Internal iliac nodes
Obturator nodes
Sacral nodes
Penile lymph nodes
- (skin) superficial inguinal nodes
- (glans penis) deep inguinal and external iliac nodes
- (erectile tissue) internal iliac nodes
Undescended Testis
Cryptorchidism
Lymph nodes that drain urethra
(Posterior): external and internal iliac nodes
(Anterior): deep and superficial inguinal nodes
Allows to predict malignancy close to the prostate
External and internal iliac nodes
Allows to predict malignancy, lesions, and infections including gonorrhea, gonococcal urethritis, lymphadenopathy or swelling in the penile urethra
Deep and superficial inguinal nodes
Posterior branches of the internal iliac artery
Iliolumbar artery
Lateral sacral artery
Superior gluteal artery
Catheter inserted during a urethral obstruction instead of the usual foley catheter
It is inserted during a full bladder - avoids the obstructed area
suprapubic catheter
collected urine is least contaminated - it is sterile
Among the erectile tissue muscle,
(1) which one plays a major role in the process of erection and
(2) which one functions during emptying of urine and semen
(1) ischiocavernosus muscles
(2) bulbospongiosus muscles
Erection is due to accummulation of blood; contraction of muscles impinge on the dorsal penile vein which causes blood to pool
Sacral Plexus
Memorize
Penile part of urethra has two angles:
(1) anterior bend in the root of the penis after passing the perineal membrane
(2) follows the inferior curve of the penis - disappears when erect
(1) Fixed angle
(2) Unfixed angle
() prevents mixing of alkaline semen with urine during intercourse; or retrograde flow of ejaculation
also functions in urinary continence; crescentic urethral lumen
Innervated completely by sympathetic nerve fibers
Preprostatic urethra
Prostatic Urethra parts:
(1) posterior wall
(2) floor
(1) midline ridge or urethral crest - each side has a shallow depression called prostatic sinus
(2) with prostatic ducts
Homologus for the female uterus or vagina
prostatic utricle
Midline elevation of the urethral crest
Verumontanum, colluculus seminalis, or superior colliculus
contains the slit-like orifice of the prostatic utricle
Urethral Supply:
a.) blood supply
b.) venous drainage
c.) lymph drainage
a.) proximal - urethral artery branch of the internal pudendal artery; penile - dorsal penile artery
b.) dorsal internal vein to internal pudendal vein
c.) Posterior - internal & external iliac nodes, anterior - deep and superficial inguinal nodes
Largest zone in prostate
A. peripheral
B. central
C. transitional
A. Peripheral
