Non-Testicular Structures of Male Reproductive Tract Flashcards
where is most of the volume of ejaculate derived from
the seminal vesicles and prostate gland
what does the bulbourethral gland produce
a clear fluid that is released before ejaculation
what is the function of the fluid produced by the bulbourethral gland
lubrication of the urethra
what are the three segments of the urethra
prostatic, membranous and penile
what are the seminal vesicles
a sac with a coimplete array of folds lined by pseudostratified columnar epithelium and smooth muscle surrounding the folds
what do the ducts from the seminal vesicles join
the vas deferens
what does the joining of the seminal vesicles and vas deferens form
the ejaculatory duct
what does the ejaculatory duct pierce/empty into
the prostate gland and urethra
what surround the prostate gland
a thin fibromuscular capsule
what defines the capsule of the prostate
the fibromuscular septa that form spaces lined by a heterogeneous secretory epithelium
what is the urethra lined by
transitional epithelium
what does the urethra pass through within the prostate
fibrous stromal tissue at the centre of the gland
what other than the urethra passes through the prostate
the ejaculatory ducts
what does the prostate produce
a watery fluid
what are the three zones of the prostate
the transitional, central and peripheral zones
what is common in older men within the prostate
prostatic concecrations
what is characteristic of the skin of the penis
it has a richly vascularised subcutaneous layer with a fibrocollagenous capsule
what is the fibrocollagenous capsule of the penis known as
tunica albugina
what are the 3 erectile tissue within the tunica albugina
two corpora cavernosa and the corpus spongiosum
which erectile tissue does the urethra go through
the corpus spongiosum
which erectile tissue contains more erectile tissue
cavernosa
what is the penile urethra lined by
stratified columnar epithelium, chaning to non-keratinised stratified squamous near the tip of the penis
what does the erectile tissue consist of
blood sinuses surrounded by fibromuscular tissue containing smooth muscle
what are the blood sinuses of the penis supplied by
helicine arteries
where are the veins draining the blood sinuses of the penis
just below the fibrocollagenous capsule
what does parasympoathetic stimulation cause within the penis
dilation of the helicine arteries which causes the sinuses to become engored with blood (erection)
POINT
what does sympathetic stimulation cause within the penis
ejaculation
SHOOT
