Bladder Prostate and Urethra Flashcards
What are the X4 main parts of the male urethra?
For the 3rd and 4th part explain what the urethra is passing through.
1) pre-prostatic urethra
2) prostatic urethra
3) membranous urethra = passes through the deep perineal pouch
4) spongy urethra = passes through corpus spongiosum
What is the name of the area in the roof of the penis that you have to be cautious about when catheterising?
The navicular fossa
Where is the external urethral sphincter located?
In the deep perineal pouch
Which nerve is in voluntary control of the smooth muscle of the external, urethral sphincters?
The pudendal nerve (S2, 3 and 4)
What do males have that females do not with regard to sphincters?
Where is this located?
They have an internal urethral sphincter surrounding the pre-prostatic urethra
What is the function of the internal urethral sphincter?
For protection against reflux during ejaculation
Which part of the urethra does the vas deferns join to?
The vas deferens travels through the prostate into the prostatic urethra
In males what is the course of the ureters as they descend to the bladder?
OVER the external iliac artery
OVER the obliterated umbilical artery
UNDER the vas deferens
In females what is the course of the ureters as they descend to the bladder?
OVER the external iliac artery
OVER the obliterated umbilical artery
UNDER the uterine artery
What is the back triangle or the bladder at which the ureters enter?
The trigone
What is significant about the trigone area?
It’s walls are smooth and will not distend
What is the muscle that the rest of the bladder (not the trigone area) is made from?
The detrusor muscle
What connects the apex of the bladder to the umbilicus?
The medial umbilical ligament
What do the vas deferens join before entering the prostate?
The seminal vesicle glands
What is the lymphatic drainage of the bladder?
Internal iliac —> para aortic —> cysterna chyli etc…
