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Flashcards in Urinary System Deck (44)
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What is the function of the urinary system?

pH, fluid, electrolyte regulation

Liquid waste elimination

1

What is the functional unit of the kidney?

Nephron

2

What connects the kidneys to the urinary bladder?

Ureters

3

What stores urine?

Urinary bladder

4

When leaving the bladder, what does urine go through?

Urethra

5

The ion balance and excretion is accomplished by a _______________ mechanism in the nephron.

Countercurrent

6

Blood is filtered at the __________ ________ such that particles smaller than ______ molecular weight pass into tubule system, most of which will be selectively reabsorbed in the convoluted tubules.

Glomerular capsule

70,000

7

The distal wall of Henle's loop (ascending limb) then actively transports ____ ions (Na+ follows passively) out of the tube and into the surrounding _________ (peritubular) fluid.

Cl-

Interstitial

8

The relatively high _____ concentration draws water out of the tube (esp collecting ducts), thereby ______ the concentration of urine left behind.

Salt

Increasing

9

The salt ions are then transported back into the descending limb of the loop, thus _______ the urine dehydrating/concentrating power of the loop.

Multiplying

10

The countercurrent term identifies that descending limb fluid is flowing in a direction _______ that in the ascending limb, which allows for the recycling of _______.

Opposite

Ions

11

Countercurrent multiplier mechanism allows for urine to be concentrated up to ______ times normal plasma levels

Ten

12

Blood goes out to the ______ and then down into the ______ to be filtered

Cortex

Medulla

13

Kidneys produce what 2 chemicals?

Erythropoieten and renin

14

What effect does aldosterone have on the kidneys?

Retains sodium

15

How does blood get into glomerular capsule?

Capillary have holes in them that "bleed" - comes in at a high blood pressure

16

Only the _______ actually makes it through glomerular capsule

Plasma (at 300 mOsm)

17

The farther down the descending limb, the ______ the concentration.

Higher

18

The ascending limb is ____________ (water cannot leave/enter)

Impermeable

19

ADH causes ________ loss in distal convoluted tubule

Water

20

Alcohol stops what from working, causing water to remain in the distal convoluted tube?

ADH

21

What are the glands above the kidneys called?

Adrenal glands

22

Name #7

Inferior vena cava

23

Name #8

Abdominal aorta

24

Name #9 and #10

Iliac artery and vein

25

Name #11 and #13

Right renal vein and artery

26

Name #12 and #14

Left renal vein and artery

27

Name #18

Psoas major muscle

28

Name #23

Fibrous outside capsule

29

Name #25

Major calyx