(final) Lecture 12 (5/18/16) PT. 2 Flashcards Preview

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Flashcards in (final) Lecture 12 (5/18/16) PT. 2 Deck (18):
1

The concentration of the filtrate inside the nephron is _______ as the concentration of the material in the interstitial fluid in the medulla.

about the same

2

What is actively transported out of the loop and into the interstitial space?

chloride ions

3

The ascending limb is impermeable to...

water

4

What is the most concentrated part of the nephron?

bottom of the Loop of Henle

5

The descending loop is permeable to ______, not _____.

H20, not solute

6

"The ascending limb is getting rid of ________.
As you go up and up, it's getting less __________."

salts
concentrated

7

The loop has used materials in the glomerular filtrate to set up a concentration gradient in the _______________ of the kidney.

interstitial space

8

What does the collecting duct collect from?

many distal convoluted tubules

9

"When the concentration is the highest, what does that do to your rate of transport?"

it increases it

10

What does the cortex contain?

convoluted tubules
proximal part of Loop of Henle
proximal part of collecting tubules

11

What does the medulla contain?

distal part of Loop of Henle
distal part of collecting tubules

12

Where does most active transport take place?

medulla

13

The collecting duct is permeable to ______ the same way the descending limb is permeable to _____.

water

14

In regards to urine production, the most important hormone is __________.

Antidiuretic hormone (ADH)

15

ADH makes the distal convoluted tubule and collecting duct more or less permeable to water?

more permeable

16

ADH retains water in the body and what kind of urine?

more concentrated

17

Effect of a diuretic:

decreases (or it just doesn't increase) permeability of collecting tubule
*you lose lots of water

18

How to gain water:
How to lose water:

gain: ingest food/fluid; metabolic water
lose: urine, feces, sweat, evaporation at lungs or skin