Week 14

renal cortex & renal medulla

primary filtering drainage

Renal sinus has nothing to do with urine production

Renal blood vessels

more plasma: more urine

get 99% back and urinate 1%

Nephron

functional unit of the kidney

filarate till minor calyx, then urine

Podocytes bear processes called pedicles. Dehydrated pedicles are closer together, blood plasma doesn't leak out.

interdigitated pedicles

proximal convoluted tubules - collect filtrate, reclaim some water

distal convoluted tubules - secretion of drugs

Ureters

same length in males and females

All urinary is retroperitoneal

muscularis - not from gravity, squeezing urine down.

Urinary bladder

retroperitoneal location

fills bottom up

trigone - high concentration of barrel receptors, pressure makes ur feel ike you have to pee.

urethral sphincter - involuntary

Urine: 93-97% water, clear-yellow, sterile, pH 4.5-8

Pyelogram

X-ray image of kidneys

Nephrolithiasis

renal calculi (kidney stones)
- Ca/Mg salts, uric acid crystals > blockage of ureters

not round

Diuretics

drugs that promote fluid loss in the urine

Hematuria

blood loss in urine

Proteinuria

protein loss in urine

Dysuria

painful urination