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MBChb Week 6 RNU Test With Completed Solution
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MBChb Week 6 RNU Test WithCompleted Solution
What are the accessory glands of the male reproductive tract? - ANSWER
Prostate gland, seminal vesicles, bulbourethral glands.
What is the function of the accessory glands of the male reproductive tract? -
ANSWER To add things to the seminal fluid to make up ejaculate.
Where does the ductus deferens join the urethra? - ANSWER Just above the
prostate
What are the seminal vesicles? - ANSWER The seminal vesicles are two pouch
like structures between the bladder and the rectum that secrete a viscous
fluid that aids in spermatozoa motility and metabolism
What is the scrotum? - ANSWER Sac of skin and superficial fascia that hangs
outside the abdominopelvic cavity, contains the pair of testes
What are the layers of the scrotum? - ANSWER 1) Skin
2) Dartos fascia - contains dartos muscle that is attached to skin of scrotum
and thereby its contraction causes scrotum to wrinkle when cold to prevent
heat loss
3) External spermatic fascia
4) Cremaster muscle and fascia
5) Internal spermatic fascia
6) Tunica vaginalis
,What is the cremaster muscle? - ANSWER Layer of skeletal muscle deep to
the scrotum skin that is a component of the spermatic cord and important
for temperature regulation for testes by moving testes away from or towards
the body.
What is the cremasteric reflex? - ANSWER elevation of the testicle after
stroking the inner thigh
Which testi is usually suspended lower than the other? - ANSWER The left is
usually lower than the right.
What is the tunica vaginalis? - ANSWER Serous membrane that covers the
testicle as well as the internal surface of the scrotum
A closed sac of peritoneum that is carried down during descent.
What condition occurs as a consequence of fluid build up within the tunica
vaginalis? - ANSWER Hydrocoele
How many seminiferous tubules are found in each lobule? - ANSWER 1-4
Which structure leads into the rete testis? - ANSWER The straight tubules,
straightened branches of the coiled seminiferous tubules.
What is the order of ducts found within the testis? - ANSWER Seminiferous
tubules > Straight tubules > Rete testis > Efferent ductules > Epididymis >
Ductus Deferens > Ejaculatory ducts > Urethra
Why is the epididymis palpatable? - ANSWER It is a 6-7m long tube that is
incredibly tightly coiled
What epithelium lines the epididymis? - ANSWER pseudostratified columnar
epithelium with stereocilia
, What is the function of stereocilia in the epididymis? - ANSWER Absorption
to monitor and adjust the seminal fluid.
What happens to sperm in the epididymis? - ANSWER Sperm become motile
and able to fertilize oocyte, the epididymis stores sperm for a short time to
allow them to mature.
What is the blood supply to the testicle? - ANSWER testicular artery
What is the venous drainage of the testicle? - ANSWER Pampiniform plexus
drains into the testicular veins
Where do the testicular veins drain into? - ANSWER Left renal vein on left
and IVC on right
What is the significance of the pampiniform plexus? - ANSWER A cooling
system to try cool arterial blood through a counter current cooling
mechanism.
What lymph nodes do the testis drain into? - ANSWER Para-aortic nodes
What lymph nodes does the scrotum drain into? - ANSWER Inguinal nodes
Why is there smooth muscle within the ductus deferens? - ANSWER It
contracts by peristalsis at emission to project ejaculate.
How long is the ductus deferens? - ANSWER 45 cm
Where do the seminal vesicles develop from? - ANSWER The mesonephric
duct (driven by testosterone)
What is the function of the seminal vesicles? - ANSWER Secrete a thick,
fructose-rich liquid, which is a sperm energy source
What is the composition of seminal fluid? - ANSWER Fructose
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