The Kidneys and suprarenal glands Flashcards
functions of kidneys
- excrete most of the waste products of metabolism
- Control the water and electrolyte balance of the body
- Secrete hormones and renin into the blood stream
two kidneys filter
about 113 to 144 pints of blood a day
Filters all blood 400 times a day
kidneys lie
behind the peritoneum of the posterior abdominal wall
R kidney lower bc of large R lobe of liver
With contraction of the diaphragm
during respiration…
both kidneys move down 2.5cm
Medulla is composed of
up to a dozen renal pyramids
the renal papilla projects medially to
renal sinus which is surrounded by minor calyx which recieves urine
minor calyx merges to form
major calyx – merge to renal pelvis
The renal artery arises from the aorta at
L1 OR L2
Each renal artery divides into
anterior and posterior branches
accessory renal/extrahilar arteries common
how many segmental arteries enter the hilum of the kidney?
5 ..four
infront and one behind the renal pelvis
what arises from segmental arteries
2or 3 Interlobar arteries , one for each renal pyramid
The interlobar arteries run toward
cortex on each side of renal pyramid
Interlobar arteries form into
where
arcuate arteries
at the junction of cortex and medulla
what supplies each nephron
Afferent glomerular arterioles and
their efferent arterioles
what veins exit kidney
Peritubular venule, interlobar veins and renal vein
