bladder ureter urethra Flashcards
muscular tubes that extend from the kidneys to the posterior surface of the bladder
ureter
length of ureters
10 in ( 20 cm )
constrictions of the ureter
there are three
- ureter passes over inferior renal pole
- ureter passes over external iliac vessels
- ureter passes through the bladder wall
fourth constrictor that can exist
ureter passes posterior to the gonadal vessels
renal pelvis
expanded upper part of ureter that connects to the kidneys
separates ureters from transverse processes posteriorly
psoas muscle
blood supply to the ureters
upper part - renal artery
middle part - testicular or ovarian artery
pelvis part - superior vesicle artery
venous drainage of ureters
veins that correspond to the artery
lymph drainage of ureters
lateral aortic nodes and the iliac nodes
innervation of ureters
renal testicular or ovarian and hypogastric plexuses
afferent fibres travel up to 1st and 2nd lumbar
abdominal part of ureter
adheres close to parietal perineum
pelvic part of ureter
crosses the pelvic brim
intramural part of ureter
also known as vesicle enters the urinary bladder
ureter relationship with the uterine artery and veins
ureter crosse beneath the artery and veins to enter in the pelvic cavity
located of bladder
fat filled retro pubic space
immediately behind pubic bones
shape of bladder when empty
4 sided pyramid resides in true pelvis
has a apex base superior two inferolateral surfaces and a neck
shape of bladder when full
ovoid protrudes anteriorly & superiorly into the abdominal cavity ( hypogastric cavity )
bladder is held in place by
pubovesical ligaments in women
puboprostatic ligaments in men
(thickenings of endopelvic fascia)
neck is fixed – located approx. 3-4 cm behind the lower margin of the symphysis pubis
surrounding fat within the retropubic space
maximum capacity of bladder
500 ml
connect the bladder and umbilicus
median umbilical ligament
the bladder and the ureters connects at
superior lateral surface which faces posteriorly
inferior angles of bladder give rise to
the urethra
vasa deferens position to bladder
lie on the posteriori surface of bladder separating it from seminal vesicles
what covers the upper part of the posterior surface of the bladder
peritoneum which forms the anterior wall of rectovesical pouch
what separates the lower part of the bladder and the rectum
vas deferens seminal vescial and rectovescial pouch
what covers the superior surface of the bladder
peritoneum and is related to the coils of the ileum or sigmoid colon
lateral to bladder
lateral pelvic wall
inferolateral surface of bladder is related to
retropubic pads of fat and the pubic bones
most posterior part of bladder lie in contact with
obturator internus above and levator ani below
neck of the bladder lies on
upper surface of prostate
bladder trigone
is a smooth triangular region of the internal urinary bladder in non distended state formed by the two ureteric orifices and the internal urethral orifice the area is very sensitive to expansion and once stretched to a certain degree the urinary bladder signals the brain of its need to empty
ureter trigone location
open into the posterior inferolateral aspect of the bladder
urethra trigone location
commences at the neck of the bladder as the internal urethral orifice
sphincters of the urethra
internal and external urethral spinchters
internal urethral sphincter
located at neck of the bladder detrusor muscle (smooth m.) autonomic innervation
sphincter urethrae external urethral sphincter
with membranous urethra
skeletal muscle
innervated by pudendal n.
prevent seminal fluid from entering the bladder
sympathetic innervation of the sphincter which contacts
blood supply of bladder
superior and inferior vesicle arteries
venous drainage of bladder
vesical venous plexuses that drain into the internal iliac artery
lymph drainage of bladder
internal and external iliac nodes
innervation of bladder
sympathetic post ganglionic fibres of the 1st and 2nd lumbar descend via hypogastric plexuses
parasympathetic fibres from the pelvic splanchnic nerves from 2nd 3rd 4th sacral nerves via inferior hypogastric plexuses
inhibit contraction of the detrusor muscle of the bladder wall and stimulate closure of sphincter vesicle
sympathetic nerves
stimulate contraction of the detrusor muscle of the bladder wall and inhibit the action of spinster vesicle
parasympathetic nerves
sections of the male urethra
prostatic urethra
membranous urethra
penile spongy urethra
prostatic urethra is located in
within the anterior half of the prostate
membranous urethra is located in
deep perineal pouch with sphincter urethrae
penile spongy urethra
its proximal portion contains openings for the bulbourethral glands
length of male urethra
15-25 cm
length of female urethra
4 cm