Anatomy - Male Reproductive System Flashcards
what are the male reproductive organs?
the testes
what are the accessory male reproductive organs?
vas deferens
seminal glands
prostate gland
penis
where is the spongy urethra found?
within the corpus spongiosum
what is the most anterior organ in the pelvis in males?
the bladder
where does the prostate lie ?
inferior to the bladder
what does the detrusor muscle form around the neck of the male bladder?
the internal urethral sphincter muscle
what does the internal urethral sphincter do?
contracts during ejaculation to prevent retrograde ejaculation
where do the testes originate during development?
on the posterior wall of the abdominal cavity
how do the testes descend into the scrotum?
through the anterior abdominal wall via the inguinal canal
what is found in the spermatic cord?
testicular artery testicular vein vas deferens lymphatic vessels nerves
where do the testes sit within the scrotum?
in a sac called the tunica vaginalis
what is excess fluid in the tunica vaginalis called?
hydrocele
what are the two layers of the tunica vaginalis?
parietal
visceral (cover the testes)
where is sperm produced?
the seminiferous tubules
what helps to control the temperature of the seminiferous tubules?
dartos muscle
where do sperm pass after the seminiferous tubules?
rete testes
head of epididymis
vas deferens
what does the epididymis become?
the vas deferens
what is the usual volume of a teste?
around 12-25ml
where is the epididymis located?
the posterior aspect of the testes
where do the arteries that supply the testes arise?
from the lateral aspect of the abdominal aorta
where does the left testicular vein drain?
left renal vein
where does the right testicular vein drain?
IVC
what do the seminal vesicles produce?
seminal fluid
what does the prostate surround?
the prostatic urethra
what is the inferior aspect of the prostate in contact with?
levator ani
where do the majority of prostate cancers arise?
the peripheral zone
what are the zones of the prostate?
peripheral
central
what part of the prostate is felt on PR exam?
peripheral zone
what is the procedure of male sterilisation called?
vasectomy
what is involved in a vasectomy?
the vas deferent is transected and its lumen is sutured closed
where is the root of the penis attached?
the ischium of the pelvis
what are the three cylinders of erectile tissue within the penis?
corpus cavernosum (R+L) corpus spongiosum
what is found in the corpus cavernosum of the penis?
the deep arteries of the penis
what is found in the corpus spongiosum of the penis?
the spongy urethra
what does the distal expansion of the corpus spongiosum form?
the glans penis
what makes up the blood supply to the penis?
the deep arteries of the penis
what are the deep arteries of the penis branches of?
internal pudendal artery
from the internal iliac
what males up the blood supply to the scrotum?
internal pudendal artery
branches from the external iliac artery
where does lymph from the scrotum and most of the penis drain to?
the superficial inguinal lymph nodes
where does lymph from the testes drain to?
the lumbar nodes
