Male anatomy Flashcards
What moves to change the temperature of the testes?
Dartos muscle and fascia
expands or contracts depending on temperature regulation
works also with cremaster muscle
What is the scrotum?
It surrounds the testes
Cutaneous sac which keeps the testes cool
Contains testes, epididymis, spermatic cord
What is the supply to the scrotum?
scrotal arteries
scrotal nerves
What is the innervation of the testes?
Pudendal nerve
Sacral plexus
Lumbar plexus
What is the testes surrounded by?
Tunica albuginea
Tunica vaginalis
Tunica vasculosis
What is the blood supply to the testes?
Testicular artery (from aorta)
What is the venous drainage of the testes?
Testicular arteries
Right into IVC
Left into renal vein
What is the lymphatics of the testes?
para-aortic nodes
scrotum via superficial inguinal nodes
Explain the descent of the testes
Develop at mesonephric ridge
descend through the abdomen
through inguonal canal
testes exits antero lateral wall
What is the first examination of boy at birth?
check testes are in scrotum
How long is the epididymis?
23 feet
Where are the sertoli and leydig cells?
in the seminiferous tubules
What does the spermatic cord contain?
testicular artery pampiniform plexus genitofemoral nerve cremasteric artery artery to vas deferens processus vaginalis vas deferens lymphatics
What is the spermatic cord surrounded by?
External spermatic fascia - ex oblique
cremasteric muscle and fascia - internal oblique
Internal spermatic fascia - transversalis fascia
What is the cas deferens?
Straight muscular tube connecting epididymis to the prostatic urethra
What does the vas deferens enter between?
Ureter or bladder
Where are the contents propelled?
Into the ejaculatory ducts
What proportion of semen does the prostate produce?
20%
acidic, milky, secretions
contains prostaglandins, citric acid, phosphate, proteolytic enzymes
What does the bulbourethral gland secrete?
Thin, mucous, watery fluid
lubricates urethra and neutralises
What makes up the penis?
Urethra Corpus cavernosum and spongiosum Crus bulb Glans penis
What supplies the corpus cavernosum?
cavernosal arteries
internal pudendal arteries
What does the urethra pass into before the glans penis?
Navicular fossa
What covers the erectile muscles?
Bucks fascia
What is a hydrocoele?
Fluid withon the tunica vaginalis
