Male Repro Flashcards
What are the main structures of the male repro?
-testicle
-epididymis
-ductus deferens
-penis
Why is it important that the testicular vein forms the pampiniform plexus?
having a large amount of venous surface area surrounding the artery helps to cool down incoming blood to an appropriate temp. for the testicle
What is the role of the proper lig. of the testicle?
connect testicle to tail of epididymis
What is the role of the lig. of the tail of the epidiymus?
remnant of gubernaculum that anchors testicle to scrotum
What is the parietal vaginal tunic?
the vaginal tunic tissue facing the body wall
What is the visceral vaginal tunic?
the vaginal tunic tissue facing the ductus deferens, testicular a., and testicular v.
What is the meso-ductus deferens?
the double layer of vaginal tunic tissue forming the sheath around the ductus deferens
What is the mesorchium?
the double layer of vaginal tunic tissue forming the sheath around the testicular a. and v.
What is the role of the gubernaculum?
-shrinks and pulls testicles into scrotum
-gets testicles outside of body and to the right temp. for sperm production
What is the role of the cremaster muscle?
contract when testicle is too cold and pull it towards the warmer main body mass
What are the characteristics of the tunica dartos?
-muscle in scrotum
-allows scrotum to shrink and hold testicles to body when cold
What is a closed castration?
-spermatic cord not open to outside
-two sutures to close off entire cavity within spermatic cord
What is an open castration?
-spermatic cord open to outside
-individual sutures to tie off ductus deferens and testicular a. and v.
What are the pros and cons of a closed castration?
pro: peritoneal cav. is not opened and is not exposed to infection
con: do not get a good tie off on each structure; potential for slippage
What are the pros and cons of an open castration?
pro: tight tie off on each structure
con: open peritoneal cav. exposed to potential infection
When would you do an open vs. closed castration?
-open castration for sterile surgical suite
-closed castration for farm calls in dirty environment
What is the urethral crest?
a bulge of the urethral wall with openings for prostate secretions
What is the colliculus seminalis?
the apex of the urethral crest, where the ductus deferens connect into the urethra
Which structure surrounds the urethra where the urethral crest is?
prostate
What is the bulb of the penis?
expanded corpus spongiosum at the caudal, proximal penis
What is the corpus spongiosum?
the inner erectile tissue directly surrounding the urethra
What is the corpus cavernosum?
the outer erectile tissue that is anchored to the pelvis
What is the os penis?
ossified distal corpus cavernosum
What is the tunica alburginea?
thick, collagenous connective tissue surrounding the erectile tissues
What is the glans?
the free penis that can be extruded from the prepuce
What is the bulbous glandis?
the larger, more proximal portion of the glans
What is the pars longa glandis?
the smaller, distal tip of the glans
What does the internal iliac a. branch into?
internal pudendal a.
What does the internal pudendal a. branch into?
a. of the penis
What are the three branches of the a. of the penis?
-artery of the bulb of the penis (corpus spongiosum)
-deep artery of the penis (corpus cavernosum)
-dorsal artery of the penis (glans)
What is the bulbospongiosus?
muscle around the corpus spongiosum
What is the ischiocavernosus?
the muscle around the corpus cavernosum
What is the retractor penis?
smooth/skeletal muscle that retracts the penis after erection
