Male pelvic contents and anal triangle Flashcards
what is the vas deferens
smooth muscle tube that transports sperm from the testis to the ejaculatory duct and so into the urethra
describe the path of the vas deferens to the pelvis
passes in the spermatic cord through the superficial inguinal ring, along the inguinal canal and through the deep inguinal ring into the pelvis
describe the path of the vas deferens in the pelvis
crosses the lateral wall of the pelvis to descend towards the seminal vesicles at the posterior surface of the bladder
how is the ejaculatory duct formed
vas deferens joins with a duct from the seminal vesicle to form ejaculatory duct within the prostate gland
the sperm from the vas deferens receives what from the seminal vesicle and prostate gland
fluid
the sperm will receive fluid from the seminal vesicle and prostate gland and will also receive what
secretions from the bulbourethral glands in the deep perineal pouch
what might the vas deferens be confused with in dissection
ureter - both smooth muscle tubes passing towards the bladder
describe the path of the ureter in the pelvis
passes into the pelvis from the abdomen and crosses the bifurcation of the common iliac vessels before descending towards the base of the bladder
the ureter crosses the bifurcation of what
common iliac vessels
the vas deferens crosses the lateral wall of the pelvis over what vessels to descend towards the seminal vesicles
over the external iliac vessels
describe the structure of the seminal vesicles
appear to be small lumpy structures but are actually highly coiled tubes - long tube similar to the vas deferens but coiled around itself and held together wrapped in connective tissue
where do the seminal vesicles lie
posterior to the bladder in males
what is the function of the seminal vesicles
secrete fluid to increase the liquid component of semen and also support sperm
give an example of a component of the seminal fluid
fructose - acts as a source of energy for the sperm
the distal end of the vas deferens and the seminal vesicles are supplied by what arteries
branches of anterior division of internal iliac artery - inferior vesical and prostatic arteries
the prostatic artery is a branch of
inferior vesical artery
the inferior vesical arteries also supply the
bladder and distal part of the ureters in a male
where is the prostate gland located
sits between the bladder and the pelvic floor - inferior to bladder
describe the prostate gland
small walnut sized structure
what does the prostate gland add to sperm
fluid to increase liquid component of semen and helps to support sperm - proteolytic enzymes and acid phosphatase
why is the prostatic fluid alkaline
helps to neutralise acid environment of vagina
the prostate gland is often described as what
5 incompletely divided lobes
the prostate gland is surrounded by
capsule of connective tissue
the capsule of connective tissue surrounding the prostate gland contains what
venous plexus that drains blood towards the internal iliac veins
the prostatic venous plexus also has many communications with what
communications with vertebral veins
what is the significance of the communication of the prostatic venous plexus and the vertebral veins
mets of prostatic carcinoma can go to the lower vertebral column
the prostate gland receives what ducts
ejaculatory ducts and has the urethra passing through
the prostate gland is supplied by what arteries
internal pudendal
middle rectal
inferior vesical
what veins drain the prostate gland
veins - deep dorsal of penis - plexus - internal iliac
what supports the prostate gland
puboprostatic ligament and muscles of pelvic floor
what part of the pelvic floor mainly supports the prostate gland
pubococcygeus (part of levator ani) forms a muscular support called puboprostaticus or levatore prostatae
benign enlargement of the prostate gland usually affects what lobe
all
how can changes to the prostate gland be detected
PR exam
why are urine infections increased in prostatic hypertrophy
if the urethra is compressed or distorted small pouches can form in the bladder in which urine sits
lymph from the testes drains where
aortic nodes at root of testicular artery @ L2
the skin of the penis and wall of scrotum drain lymph where
superficial inguinal nodes