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Flashcards in Renal System Deck (50)
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1

Glomerular filtration rate

Amount of filtrate produced by kidneys each minute

2

Kidneys

Organs that produce urine

3

Ureters

Pair of tubes that transfers urine to bladder

4

Urinary bladder

Muscular sac for temporary storage of urine

5

Urethra

Conducts urine to exterior

6

Hilum

Point of entry of renal artery/ point of exit of renal vein and ureter/ into/out of the kidney

7

Excretion

Function of the kidney that involves removing organic waste from body fluids

8

Elimination

Function of kidneys that involves discharge of waste products into the environment

9

Homeostatic regulation of kidneys

Function of kidneys that includes regulation of BP, blood volume, plasma concentrations of ions, stabilization of blood Ph, conservation of nutrients, detoxification.

10

Nephron

Functional unit of the kidney

11

Renal corpuscle

Glomerulus and Bowman's capsule

12

Renal Tubule

PCT, Loop of Henle, DCT, collecting duct

13

PCT

Proximal convoluted tubule

14

DCT

Distal convoluted tubule

15

Mascula densa

Cells of the ascending limb of the loop of Henle that contain chemoreceptors to monitor the NaCl content of tubular fluid entering the DCT

16

Granular cells

Enlarges smooth muscle cells of the afferent arteriole with secretory granules containing renin / also acts as mechanoreceptors to monitor BP of the afferent arteriole

17

Renin

Enzyme that catalyzes the conversion of Angiotensinogen to Angiotensin I

18

ACE

Angiotensin converting enzyme

19

Effects of Angiotensin II

1) peripheral vasoconstriction
2) construction of efferent arteriole
3) release ADH
4) release of aldosterone

20

Filtration

Hydrostatic pressure forces water across the filtration membrane in renal corpuscle (Passive)

21

Reabsorption

Removal of water, ions, nutrients from filtrate back into circulation via peritubular capillaries
(Passive or active)

22

Secretion

Transport of solutes out of peritubular capillaries and into filtrate (passive or active)

23

Extraglomerular mesangial cells

Pass regulatory signals between macula dense and granular cells

24

Metabolic waste products filtered by kidneys

Urea, Uric acid, creatinine

25

Micturition

Urination

26

GFR

Glomerular filtration rate

27

Local regulation
Decreased BP

Dilation of afferent
Constriction of the efferent

28

Major Decrease in BP MAP

Sympathetic activation results in Constriction of the afferent arteriole.
Trying to perfuse the core

29

Minor variation increased BP

Constriction of afferent
dilation of efferent
Maintains GFR

30

Osmolarity

Number of soultes dissolved in water