1)Based on this data set, which parameter gives the greatest causal effect upon GFR

2)Which of the parameters in this data set are mathematical functions of GFR? That is to say, they don't affect GFR, GFR affects them.

3)What physiological mechanism is immediately responsible for increasing the efferent radius?

1)Based on this data set, what is the mathematical relationship between systemic blood pressure and GFR?

2)What are two things that could act to increase or decrease the systemic blood pressure?

3)What condition do the closed valves in the far right-hand column simulate

Afferent Radius (mm) 0.50 0.45 0.40 0.35 0.55 0.60 0.50 0.50 0.50 0.50 Efferent Radius (mm) 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.40 0.35 0.30 Beaker Press. (mm Hg) 90 90 90 90 90 90 90 90 90 90 Glomerular Press. (mm Hg) 55.08 51.54 48.52 46.16 58.94 62.88 55.08 56.10 56.84 57.34 Glom. Filt. Rate (ml/ min) 124.99 81.06 43.66 14.35 172.86 221.69 124.99 137.69 146.82 152.96 Urine Volume (ml) 200.44 179.88 143.91 76.33 212.87 220.74 200.44 227.49 247.96 262.23 Valve Status Afferent Radius (mm) 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 Efferent Radius (mm) 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45 Beaker Press. (mm Hg) 70 80 90 100 70 70 100 100 Glomerular Press. (mm Hg) 49.72 52.40 55.08 57.76 49.72 49.72 57.76 57.76 Glom. Filt. Rate (ml/min) 58.57 91.78 124.99 158.20 58.57 26.94 121.00 158.20 Urine Volume (ml) 161.76 186.23 200.44 209.72 161.76 0.00 0.00 209.72 open open open open open closed closed open Afferent Radius (mm) 0.50 0.45 0.40 0.35 0.55 0.60 0.50 0.50 0.50 0.50 Efferent Radius (mm) 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.40 0.35 0.30 Beaker Press. (mm Hg) 90 90 90 90 90 90 90 90 90 90 Glomerular Press. (mm Hg) 55.08 51.54 48.52 46.16 58.94 62.88 55.08 56.10 56.84 57.34 Glom. Filt. Rate (ml/ min) 124.99 81.06 43.66 14.35 172.86 221.69 124.99 137.69 146.82 152.96 Urine Volume (ml) 200.44 179.88 143.91 76.33 212.87 220.74 200.44 227.49 247.96 262.23 Valve Status Afferent Radius (mm) 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 Efferent Radius (mm) 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45 Beaker Press. (mm Hg) 70 80 90 100 70 70 100 100 Glomerular Press. (mm Hg) 49.72 52.40 55.08 57.76 49.72 49.72 57.76 57.76 Glom. Filt. Rate (ml/min) 58.57 91.78 124.99 158.20 58.57 26.94 121.00 158.20 Urine Volume (ml) 161.76 186.23 200.44 209.72 161.76 0.00 0.00 209.72 open open open open open closed closed open