reproductive system (male) Flashcards
what are the principle structures of the male reproductive system?
-penis
-scrotum
-testes
-epididymus
-vas deferens
-ejaculatory duct
-spongy urethra
-seminal gland
-prostate gland
-bulbo-urethral gland
structures that contribute to the formation of semen
-epididymus (5%)
-seminal gland (60%)
-prostate gland (30%)
-bulbo-urethral gland (5%)
are there muscles in the penis?
no, there is erectile tissue that swells with blood to cause an erection
what is another name for the foreskin?
prepuce
what are the two tissues that are part of penis
-corpus cavernosum
-corpus spongiosum
what is the tip of the penis called?
glans penis
bulbo-urethral gland function
-produce an alkaline secretion in the lumen of the urethra
-alkaline secretion keeps the optimum pH for the sperm cells
optimum sperm cell pH
7.4-7.6
prostate gland function
-produces seminalplasmin
-and semen
seminal gland function
-opens into the ejactulatory duct with the vas deferens
testes descent
the testes descend from the abdominal cavity during development
they drop into the inguinal canals into the scrotum which is colder than the body temp
the cooler temperature helps sperm development
what are contents of the spermatic cords
-genitofemoral nerve
-deferential artery
-vas deferens
-pampiniform plexus
-testicular artery
-testicular vein
-ilionguinal nerve
what branch is the testicular artery part of?
it is a branch of the aorta
which is bigger? the deferential artery or the testicular artery?
the testicular artery
what are the two layers of the scrotum?
-tunica vaginalis
-tunica albuginea
what is the perineal raphe
thick tissue that runs along the scrotum longitudinally and the ventral side of the penis
the perineal raphe separates the two chambers of the scrotum
what is the function of the dartos muscle of the scrotum
this muscle contracts the scrotal skin in cold weather
the cremaster muscle and cremaster reflex
-the cremaster pulls the testes up in cold weather
-the cremaster reflex can test for testicular torsion and spinal injury