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Which part of the kidney contains renal pyramids and minor calyces? This part is the very beginning of the collecting system
Which part of the kidney contains major calyces and the hilum and is the most echogenic? This part is surrounded by fat.
The renal hilum is located medially/laterally and contains what 3 things?
medially, a renal vein, a renal artery, and a ureter
Where do the spiral muscles that surround the pyramids live primarily? What is their function?
inside the columns of Bertin, they exert "milking" action to enhance urine flow
What are the bands of cortical parenchyma separating each renal pyramid, and these may extend into the renal sinus?
columns of Bertin
The kidney cleanses/filters the blood, while the spleen cleanses/filters the blood
What anterior structures cover the right kidney?
2. rt lobe of liver
3. 2nd part of medial duodenum
4. hepatic flexure of the colon
What anterior structures cover the left kidney?
1. panc tail
6. splenic flexure of the colon
What are the 3 constrictions of the ureters?
1. at renal hilum
2. as they cross the pelvic brim
3. at bladder wall
What is the path of waste products?
First to CORTEX-
then to PYRAMIDS-
then to MINOR CALYCES-
then to MAJOR CALYCES-
then to URETERS-
then to BLADDER-
Explain the blood flow in the kidney.
main renal artery to the-
segmental to the-
interlobar to the-
arcuate to the-
interlobular to the-
afferent to the-
Explain the vasculature in the kidney.
1. afferent arteriole
3. efferent arteriole (bk to circ)
4. Bowman's capsule
5. descending tubule
6. loop of henle
7. ascending tubule
8. convoluted tubules
9. collecting duct
collecting duct dumps into a pyramid
Where does the filtration occur in the kidney? Where do substances filter into?
glomerulus; bowman's capsule
RRA runs posterior to ___. Longer/shorter course than LRA? Where does it enter kidney?
IVC; longer; hilum posterior to RRV
Where does the LRA enter kidney? The LRA is easier/harder to see than the RRA?
at hilum posterior to LRV, harder
When you have doppler on a renal artery, what kind of resistance should it have?
LOW resis (lots of diastolic flow, sharp systolic peaks)
What is it called when there's no nice systolic window, and the peaks are elevated and irregular?
renal artery stenosis
What is it called when the systole doesn't go straight up anymore (it's delayed) and you get a point in your waveform, which signifies a decrease
Which muscle near the kidney lies lateral and relates to the lower pole of the kidney?
Labs related to the kidney?
BUN-blood, urea, nitrogen (getting rid of wastes)
What does a neonatal kidney look like?
will be smaller, not have a prominent echogenic fat layer, looks like a choc chip cookie
What 5 things do we assess the kidneys for?
1. perineal fat
2. renal size
3. parenchymal detail
4. to rule out obstruction
5. to rule out anomalies
This anomaly is excess fat in the sinus and collective tissue (makes tumor distinction more difficult).
renal sinus lipomatosis
This anomaly is a band of cortical tissue extending between renal pyramids, sometimes to the renal sinus. (will be isoechoic to the renal cortex)
hypertrophied column of bertin
This anomaly has 2 separate renal sinuses, and the column of bertin goes the whole way through.
duplex collecting system
This anomaly is the absence of a kidney and ureter. What is this linked to?
Renal agenesis; absence of ovary
This anomaly is a little extra patch of renal parenchyma (like an accessory kidney)
This anomaly occurs when the pelvis lives outside of the kidneys (you can see sonographically that nothing else has fluid in it)
extra renal pelvis
This anomaly is common when you search in the normal spot for a kidney and do not see one.
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