Long description: A capillary with the net filtration pressure at the arterial e

Question

Long description: A capillary with the net filtration pressure at the arterial end (10 mm Hg), middle of the capillary (0 mm Hg), and venous end (-7 mm Hg). There is a red arrow point out of the capillary at the arterial end, a purple arrow point out and into the capillary at the middle portion of the capillary, and a blue arrow pointing into the capillary at the venous end of the capillary. Within the capillary, there is an arrow that points from right to left, it is red at the arterial end, purple in the middle portion, blue at the venous end.

1.      Using the above diagram as a reference, what four pressures are working in and around the capillary? What direction are they forcing the fluid? (5pts)

2.      Using the above diagram as a reference, which of the four pressures promote filtration and which of the four promote reabsorption? (5pts)

Filtration No net movement Reabsorption Arterial end net filtration pressure +10 mm Hg Mid capillary net filtration pressure 0 mm Hg Venous end net filtration pressure Fluid exits capillary since capillary hydrostatic pressure (35 mm Hg) is greater than blood colloidal osmotic pressure (25 mm Hg) No net movement of fluid since capillary hydrostatic pressure (25 mm Hg)blood colloidal osmotic pressure (25 mm Hg) Fluid re-enters capillary since capillary hydrostatic pressure (18 mm Hg) is less than blood colloidal osmotic pressure (25 mm Hg

Explanation / Answer

1. using the above diagram as a reference, what four pressures are working in and around the capillary? What direction are they forcing the fluid? (5pts)

2.      Using the above diagram as a reference, which of the four pressures promote filtration and which of the four promote reabsorption? (5pts)

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