Kidneys anatomy Flashcards
function of the kidney
removal of waste product
regulate electrolyte balance, and acid base homeostasis
upper poles of the kidneys located at what vertebra
T12
is the kidney a retroperitoneal organ
yes
vertical cleft is the
renal hilum
layers of the renal hilum
renal vein is the most anterior
ureter most posterior
organ relationship to the right kidney
organ relationship to the left kidney
psoas muscle lies …. to the kidney
posterior medial to kidney
quadratus lumborum lies…
immediately posterior to the kidney
gerotas fascia surrounds
kidneys, adrenal and perirenal fat
perirenal fat surrounds
surrounds the true capsule
true capsule covers
each kidney in a dense fibrous covering, comes in direct contact with renal cortex
2 types of tissue in the kidney
renal parenchyma: cortex, medulla
renal sinus
normal renal cortex size
> 1cm
the renal cortex contains
renal corpuscles
proximal and distal convoluted tubules of the nephron
how many renal pyramids does a medulla contain
8-18
the medullas contains the loop of?
henle and collecting duct
reabsorption occurs in the medulla
nephron
forms urine
smallest functional unit
filters blood
structure of a nephron
- proximal convoluted tubule
- loop of henle
- distal convoluted tuble
- collecting duct
what is afferent renal arterioles
brings blood to the glomerulus
effect arteriole
carries blood away from glomerulus
bowmans capsule
double walled cup of tissue that surrounds the glomerulus
glomerulus
capillary network
bowmans capsule and glomerulus form the
renal corpuscle
glomerular filtration
fluid is forced across a membrane into the nephron; increases with increased blood pressure; decreased with kidney disease
tubular resorption
while the fluid is within the renal tubules, it can be resorbed according to the body’s needs; electrolytes and components of the fluid are selectively resorbed to allow for excretion of intended waste products
tubular secretion
selective process of disposing of the waste products and pH regulation
which renal artery is longer
the right and passes posterior to IVC
which renal vein is longer
the left
normal kidney length
9-12 cm
normal kidney width
4-6 cm
both kidneys measurement should be within …
2 cm of eachother
dromedary hump
cortical bulge on the lateral border
more common on left
fetal lobulation
surface of kidney is indented between the calyces
column of bertin
prominent indents of the cortex within medulla
junctional parenchymal defect
triangular echogenic area on the upper pole
normal ureters
about 25 cm long
descend retroperitoneally
enter posterior lateral into bladder
bladder wall layers
- mucosa - mucous layer of transitional epithelial cells, allows bladder wall to stretch
- submucosa - dense connective tissue which connects the mucosa and muscularis layers - muscularis - coat of smooth muscle which consists of three layers, detrusor muscle
- serosa (adventitia) - outer most layer which covers superior portion of bladder
bladder wall layers
- mucosa - mucous layer of transitional epithelial cells, allows bladder wall to stretch
- submucosa - dense connective tissue which connects the mucosa and muscularis layers - muscularis - coat of smooth muscle which consists of three layers, detrusor muscle
- serosa (adventitia) - outer most layer which covers superior portion of bladder
normal mL for bladder
400-600
in males the bladder lies
anterior to rectum
in females the bladder lies
anterior to vagina and uterus
normal wall measurement for bladder when full
<3mm
normal wall measurement for bladder when empty
<5mm
normal bladder post residual volume
100 mL
urethra length in males
20 cm long
urethra length in females
3-4 cm long
BUN increases w/
decreased renal function
dehydration
starvation
congestive HF
creatinine increases w/
decreased renal function
urinary tract obstruction
acute tubular necrosis
glomerulonephritis
uric acid increases w/
renal failure
proteinuria increases w/
glomerulonephritis