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Cell Bio Exam 4 > Urinary > Flashcards

Flashcards in Urinary Deck (82)
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1

What is the depression in the kidney's concave surface where vessels, ureter, and nerves pass into or leave the kidney called?

Hilum

2

What does the hilum open into?

renal sinus

3

What is the funnel-shaped, expanded, proximal end of the ureter?

renal pelvis

4

The renal sinus is a fat-filled cavity enclosing the following:

- branches of the renal artery, and vein, lymph vessels
- ureter and nerve fibers

5

What does the outer layer of the kidney capsule have? inner layer?

outer: collagen and fibroblasts
inner: myofibroblasts

6

What are the layers of the kidney from inner to outermost?

medulla -> cortex -> capsule

7

The cortical tissue overlying the base of a pyramid is ...

the cortical arch

8

What are the two alternating regions that make up the cortex?

cortical labyrinth and medullary rays

9

What 3 structures are found in the cortical labyrinth?

1. Renal corpuscles
2. Convoluted tubules (PCT and DCT)
3. Collecting tubules

10

What is the medullary tissue that extends from the base of the pyramids into the cortex in longitudinal striations?

Medullary rays

11

What structures are found within the medullary rays?

1. straight tubules ( proximal and distal )
2. collecting ducts

12

True or False: 90% of the blood flowing through the kidney is in the medulla.

FALSE

cortex not medulla
-the blood will be filtered through the glomeruli

13

What two structures are found in the medulla?

1. renal pyramids
2. renal columns of Bertin

14

How many renal pyramids are there per kidney?

8-18

15

Where does the apex of the renal pyramid drain?

minor calyx

16

What is another name for the apex of the renal pyramid?

renal papilla

17

What consists of approx. 20 openings of the ducts of Bellini?

Area cribosa

18

Where is the base of the renal pyramid?

at corticomedullary border

19

What are the renal columns of Bertin?

cortical tissue projecting between medullary pyramids
(they are considered part of the medulla)

20

What two structures are included in the renal columns of Bertin?

- straight tubules of the nephrons
- collecting ducts

21

What structure receives the apex of one pyramid?

minor calyx

22

Several minor calyces converge and open/drain into a ...

major calyx

23

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)

24

What composes a kidney lobule?

a collecting duct and all the nephrons that empty into the duct

25

nephron + collecting tubule = ?

uriniferous tubule

26

What is the structural and functional unit of the kidney?

nephron

27

What are the components of a nephron?

1. renal corpuscle
2. proximal tubule
3. thin limbs of henle's loop
4. distal tubule

28

What are the components of a renal corpuscle?

1. glomerulus
2. bowman's capsule
3. bowman's space
4. vascular pole
5. urinary pole
6. filtration barrier

29

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

30

Where is Bowman's capsule located?

proximal end of the nephron