Physiology of the Kidney Flashcards Preview

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Flashcards in Physiology of the Kidney Deck (350)
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1

The function of the kidney is to maintain...

  • Isovolemia
  • Isoionia
  • Isosmosis
  • Isohydria

2

How does the kidney control isohydria?

By elimination of H+ ions

3

List the functions of the kidney

  • Homeostasis
  • Conservation of essential substances
  • Acid-base balance
  • Cardiovascular regulation
  • Exogenous and endogenous component elimination
  • Hormone production
    • Direct
    • Indirect

4

List the anatomical features of the bovine kidney

  • No renal pelvis
  • Lobular surface
  • Pyramids lead to calyxes
  • Calyx leads directly to the ureter

5

The adipose tissue around the renal sinus functions as a...

Shock-absorber

6

What is the functional unit of the kidney?

The nephron

7

Give the elements of the nephron

  • Malpighi body
  • Tubular system

8

How many nephrons are found in each kidney?

1,000,000

9

What are the 4 basic functions of the nephron?

  • Filtration
  • Reabsorption
  • Secretion
  • Excretion

10

What % of cardiac output does the kidney receive?

20-25%

11

What % of plasma is filtered into the renal tubules?

20%

12

What is the renal filtration rate? excl. bovine

  • 125 ml/min
  • 180 l/day

13

What is the urinary output rate?

1.5 l/day

14

Why is the renal filtration rate higher than the urinary output rate?

Fluid is reabsorbed from the tubules

15

What isn't filtered by the kidney?

Protein

16

What is the bovine renal filtration rate?

486 l/day

17

List the sections of the tubulary system

  • Proximal tubule
  • Henle loop
  • Distal tubule
  • Collecting tubule

18

Sections of the proximal tubule

  • Proximal convoluted tubule
  • Proximal straight tubule

19

Sections of the Henle loop

  • Descending thin limb
  • Ascending thin limb
  • Thick ascending limb

20

Sections of the distal tubule

  • Distal convoluted tubule
  • Distal connective tubule

21

Sections of the collecting duct

  • Cortical collecting duct
  • Medullary collecting duct

22

Proximal convoluted tubule (PCT)

23

Proximal Straight Tubule (PST)

24

Descending Thin Limb (DTL)

25

Distal connective tubule (CNT)

26

Distal convoluted tubule (DCT)

27

Thick ascending limb (TAL)

28

Ascending thin limb (ATL)

29

Cortical collecting duct (CCD)

30

Medullary collecting duct (MCD)