Week 9 (Urinary) Flashcards
Where are the kidneys in your body?
- Retroperitoneal
- Superior lumber region
How big is each kidney
- Computer mouse
what do your kidneys do
- Filter blood and produce urine
- Regulate blood volume, composition
- Produce enzyme renin
- produce hormone erythropoietin
- activate vitamin D
how much of the blood that is filtered in the kidneys is reabsorbed
- 99% reabsorbed
- 1% exists as urine
Name the 4 steps in urine formation
a. Glomerular filtration
b. Tubular reabsorption
c. Tubular Secretion
d. Water conservation
The nephrons of the kidney filter the blood and produce urine. In which step of the urine formation are the nephrons overloaded with glucose so that glucose is present in the urine of a patient with diabetes mellitus
Tubular resaborption
Most nephrons are in the cortex, however 15% have a much longer nephron loop that extends into the medulla. In conjunction with anti-diuretic hormone, these juxtamedullar nephrons concentrate urine during which step in the urine formation
water conservation
what is the maximum volume of urine the bladder can hold
One later 1000ml
Into which anatomical structure is a urinary catheter inserted?
urethra
What anatomy of the female body increases the risk of contracting a bladder infection (cystitis) compared to a male?
- urethra shorter
- urethral meatus close to vagina and anus
Why position an attached catheter bag below the patients body?
maintain flow of urine away from kidneys
Urethra
muscular tube to drain urine bladder to outside of body
Ureters
Conveys urine from kidneys to bladder
Renal pelvis
Flat funnel-shaped tube continuous with ureter
Diuretic
chemical which enhances urine output
