[5] Tubular Transport Flashcards
How does Age affect Total Body Water
Older: Less water due to less muscle mass
Infants: 80% of body mass is water
How does Age affect Total Body Water
Older: Less water due to less muscle mass
Infants: 80% of body mass is water
How does being Obese affect Total Body Water
Carry less water since they have more adipocytes which have a low water content
How does Sex affect Total Body Water
Females have less water
Components of Total Body Water
60:40:20:5 Rule
TBW: 60% BW
IC Fluid: 40% BW
EC Fluid: 20% BW
Plasma: 5% BW
Define: Edema
Excess fluid in the interstitial compartment
What happens to a substance when it is albumin bound?
It cannot be filtered, it is excreted through tubular secretion
% Resorption of Urea
50%
% Resorption of Glucose
Filtered and 100% Reabsorbed
How does the Kidney handle inulin?
Filtered, neither resorbed nor secreted
How does the Kidney handle Para Aminohippurate (PAH)
Filtered, resorbed, and secreted
[What Gets Absorbed/Secreted?]
Proximal Convoluted Tubule
Absorbed
Water
Ions
Organic Nutrients
[What Gets Absorbed/Secreted?]
Loop of Henle
Absorbed
Descending: Water
Ascending: Na and Cl Ions
[What Gets Absorbed/Secreted?]
Distal Convoluted Tubule
Secreted
Ions
Acids
Drugs and Toxins
Absorbed
Water
Na
Ca
What delivers urine to the minor calyx?
Papillary Duct
How is Sodium absorbed in the PCT?
Concentration and Electrical Gradient
How does being Obese affect Total Body Water
Carry less water since they have more adipocytes which have a low water content
How does Sex affect Total Body Water
Females have less water
Components of Total Body Water
60:40:20:5 Rule
TBW: 60% BW
IC Fluid: 40% BW
EC Fluid: 20% BW
Plasma: 5% BW
Define: Edema
Excess fluid in the interstitial compartment
What happens to a substance when it is albumin bound?
It cannot be filtered, it is excreted through tubular secretion
% Resorption of Urea
50%
% Resorption of Glucose
Filtered and 100% Reabsorbed
How does the Kidney handle inulin?
Filtered, neither resorbed nor secreted
How does the Kidney handle Para Aminohippurate (PAH)
Filtered, resorbed, and secreted
[What Gets Absorbed/Secreted?]
Proximal Convoluted Tubule
Absorbed
Water
Ions
Organic Nutrients
[What Gets Absorbed/Secreted?]
Loop of Henle
Absorbed
Descending: Water
Ascending: Na and Cl Ions
[What Gets Absorbed/Secreted?]
Distal Convoluted Tubule
Secreted
Ions
Acids
Drugs and Toxins
Absorbed
Water
Na
Ca
What delivers urine to the minor calyx?
Papillary Duct
How is Sodium absorbed in the PCT?
Concentration and Electrical Gradient
