URINARY ELIMINATION Flashcards
Upper urinary tract
▪ Kidneys, ureters
Lower urinary tract
▪ Bladder, urethra, pelvic floor
o Base of bladder
Trigone
- Located behind peritoneal cavity on either side of the spine
KIDNEYS
▪ tuft of capillaries surrounded by
Bowman’s capsule
Glomerulus
▪ provides active tension designed to close
the urethral lumen
Internal sphincter under involuntary control
Once the urine is formed in the kidneys, it moves through
the collecting ducts into the calyces of the renal pelvis and
from there into the
URETERS
- Hollow organ serving as reservoir for urine and as the organ
of excretion.
BLADDER
- Extends from bladder to meatus (opening)
- serves only as a passageway for the elimination of urine
URETHRA
allows the bladder to expand as
it fills with urine, and to contract
to release urine to the outside of
the body during voiding
▪ Detrusor muscle
▪ allowing the individual to choose when
urine is eliminated
o External sphincter under voluntary control
o process of emptying the urinary bladder
- Micturition, Voiding, Urination
URINATION
transmit impulses to spinal cord voiding
reflex center
Stretch receptors
▪ Involuntary passing of urine when control
should be establishes
o Enuresis
▪ bed-wetting, is the involuntary passing of
urine during sleep
o Nocturnal enuresis
(calculus)
Urinary stone
o production of abnormally large amounts of urine
by the kidneys, often several liters more than the
client’s usual daily output.
Polyuria (Diuresis)
o Excessive fluid intake
polydipsia