Active Transport, Passive Transport
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| Question |
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| Answer |
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| What molecule are transported via Active transport during Tubular Reabsorption? |
1. Glucose; 2. Amino Acids; 3. Na+, K+, Ca++, HCO3-; 4. Water-Soluble Vitamins |
| What factor regulates the speed of Active Transport? |
Tm = Transport Maximum = carrier saturation |
| What is the result of overwhelmed carriers during Tubular Reabsortion? |
Glucose and Protein in Urine |
| What 2 factors can affec Active Transport? |
Hormones and some Drugs |
| What are the 2 methods of Passive |
Osmosis, Simple Diffusion |
| What stimulates Osmosis during Tubular Reabsorption? |
^ concentration --> decrease concentration |
| What factor influences Osmosis? |
Tubular Permeability, Concentration Gradients |
| At what point during Tubular Reabsorption is Water transported? |
H2O follows Active Solute Reabsorption |
| What molecules are transported via Simple Diffusion? |
Urea, other NON-Polar Solutes follow water reabsorption |
| What factor may interfere with H2O reabsorption? |
anything that interferes with Solute Reabsorption interferes w/ H2O reabsorption |
| Why does Simpl Diffusion occur? |
when H2O leaves, Urea and NON-Polar solutes ^ in concentration --> Passive Diffusion --> reabsorption |
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