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A & P Test 5 part E
Urinary Tract
22
Anatomy
Undergraduate 1
11/01/2008

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Cards

Term
Where is the countercurrent Multipier system and what does it do?
Definition
Located in Loop of Henle- interstitial osmolarity changes can concentrate or dilute urine concentration
Term
What can concentrate or dilute urine concentration in the Loop of Henle?
Definition
Interstitial Osmolarity changes- part of countercurrent multiplier system
Term
Is water reabsorbed in ascending or descending Loop of Henle?
Definition
Descending loop of Henle- highly concentrated urine 1200 max amount
Term
Is Na+, K+, Cl- reabsorbed in ascending or descending loop of Henle and what effect does it have on urine?
Definition
Ascending loop of Henle and it dilutes urine
Term
What capillary follows the Loop of Henle?
Definition
Vasa Recta
Term
In the Vasa Recta following the Loop of Henle, the osmolarity of plasma is concerned with?
Definition
Filtrate from 300 mosm?L to 900 and back to 320
Term
Which test shows how well kidneys remove substances from plasma?
Definition
Renal clearance tests
Term
What does a High renal clearance test mean?
Definition
Very efficient removal of substances into urine
Term
What does a Low renal clearance test mean?
Definition
Inefficient removal of substances into urine
Term
What does a renal clearance test show?
Definition
How well kedneys remove substances from plasma
Term
If substances are removed very efficiently from plasma, is the renal clearance low or high?
Definition
High renal clearance
Term
What is the formula for Renal Clearance?
Definition
RC=UV/P
U=concentration of substance in uring mg/mL
V=urine flow rate ml/min
P=concentration of substance in plasma mg/mL
Term
In the formula, RC=UV/P, what is U?
Definition
U=concentration of substance in urine mg/mL
Term
In the formula, RC=UV/P, what is P?
Definition
P= concentration of substance in plasma mg/mL
Term
In the formula, RC=UV/P, what is V?
Definition
V= urine flow rate ml/min
Term
What test is based on GFR, tuular reabsorption and tuular secretion?
Definition
Renal clearance
Term
Where is Insulin filtered?
Definition
In GFR
Term
Is insulin reabsorbed and secreted?
Definition
NO
Term
Is creatinine filtered?
Definition
Yes
Term
Is creatinine reabsorbed and secreted?
Definition
No
Term
What is a normal value for insulin?
Definition
125 mL/min= normal GFR
Term
What is a normal value for Creatinine?
Definition
140 mL/min
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