Flashcards in Urinary Deck (82)
What is the depression in the kidney's concave surface where vessels, ureter, and nerves pass into or leave the kidney called?
What does the hilum open into?
What is the funnel-shaped, expanded, proximal end of the ureter?
The renal sinus is a fat-filled cavity enclosing the following:
- branches of the renal artery, and vein, lymph vessels
- ureter and nerve fibers
What does the outer layer of the kidney capsule have? inner layer?
outer: collagen and fibroblasts
What are the layers of the kidney from inner to outermost?
medulla -> cortex -> capsule
The cortical tissue overlying the base of a pyramid is ...
the cortical arch
What are the two alternating regions that make up the cortex?
cortical labyrinth and medullary rays
What 3 structures are found in the cortical labyrinth?
1. Renal corpuscles
2. Convoluted tubules (PCT and DCT)
3. Collecting tubules
What is the medullary tissue that extends from the base of the pyramids into the cortex in longitudinal striations?
What structures are found within the medullary rays?
1. straight tubules ( proximal and distal )
2. collecting ducts
True or False: 90% of the blood flowing through the kidney is in the medulla.
cortex not medulla
-the blood will be filtered through the glomeruli
What two structures are found in the medulla?
1. renal pyramids
2. renal columns of Bertin
How many renal pyramids are there per kidney?
Where does the apex of the renal pyramid drain?
What is another name for the apex of the renal pyramid?
What consists of approx. 20 openings of the ducts of Bellini?
Where is the base of the renal pyramid?
at corticomedullary border
What are the renal columns of Bertin?
cortical tissue projecting between medullary pyramids
(they are considered part of the medulla)
What two structures are included in the renal columns of Bertin?
- straight tubules of the nephrons
- collecting ducts
What structure receives the apex of one pyramid?
Several minor calyces converge and open/drain into a ...
What three things compose a kidney lobe?
1. renal pyramid
2. associated cortical tissue at the base of the pyramid
3. associated cortical columns of Bertin (one half of each adjacent renal column)
What composes a kidney lobule?
a collecting duct and all the nephrons that empty into the duct
nephron + collecting tubule = ?
What is the structural and functional unit of the kidney?
What are the components of a nephron?
1. renal corpuscle
2. proximal tubule
3. thin limbs of henle's loop
4. distal tubule
What are the components of a renal corpuscle?
2. bowman's capsule
3. bowman's space
4. vascular pole
5. urinary pole
6. filtration barrier
What is the glomerulus?
- a cluster of fenestrated capillaries in an arterio-capillary bed
- glomerular ultrafiltrate oozes out of the glomerulus by passing through the filtration barrier