urinary system Flashcards
function of kidneys
produce urine
filter blood
maintain electrolyte, water and acid-base balance
produce hormones
position of kidneys
T12-L3
right kidney is located lower due to liver
covering of kidneys
kidneys are covered by renal fascia, renal fat (adipose capsule and pararenal fat)
renal fascia of kidney
anterior joins the peritoneum, posterior layer joins the posts fascia, superior and lateral are closed, medial and inferior open for vessels and ureter
nerves in pararenal fat
subcostal, iliohypogastric and ilioinguinal
splenorenal ligament
contains the splenic blood vessels
dorsal mesogastrium
= splenorenal ligament and gastrosplenic ligament
renal sinus
space that contains minor and major calyces, renal pelvis, renal fat, vessels and nerves
renal lobes and liberated kidneys in newborns
8-18 renal pyramids
newborns have lobulated kidney
variation in anatomy of the renal pelvis
dendritic pelvis- long, slim and reified calyces
ampullarf type- short calyces
blood supply to the kidney
right and left renal arteries from the aorta
left and right renal veins into IVC
five segments of the idney
superior, inferior, posterior, anterior inferior, anterior superior
branching of renal arteries
renal artery–> segmental arteries –> lobar arteries –> interloper arteries –> arcuate arteries –> interlobular arteries —> afferent arterioles –> glomerulus —> efferent arterioles —> normal capillaries
renal corpuscle
glomerulus surrounded by bowman’s capsule
partial layer and visceral layer (from by podocytes)
vascular pole where arterioles enter and urinary pole where the proximal tubule drains
components of the glomerular filter system
endothelial cells
podocytes
basement membrane