12. Referring to the following hydrostatic and oncotic pressures across a muscle capillary wall, which of the following is the net pressure (in mm Hg) for fluid movement across the capillary wall?Capillary hydrostaticPlasma oncotic40 mmHg35 mmHg10 mmHgInterstitial hydrostatic -5 mmHg(A) -10B) -5C) 0D) +5OE) +20(CInterstitial oncotic

Answered: Referring to the following hydrostatic…

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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Question

12. Referring to the following hydrostatic and oncotic pressures across a muscle capillary wall, which of the following is the net pressure (in mm Hg) for fluid movement across the capillary wall?
Capillary hydrostatic
Plasma oncotic
40 mm
Hg
35 mm
Hg
10 mm
Hg
Interstitial hydrostatic -5 mm
Hg
(
A) -10
B) -5
C) 0
D) +5
OE) +20
(
C
Interstitial oncotic

Expert Solution

Step 1

Capillary hydrostatic pressure is the outward pressure applied by the stream of blood on the vessel wall. It favours the movement of substances from inside the vessel to outside.

Plasma oncotic pressure is the pressure applied by the plasma proteins and it resists the outward movement of substances from the capillary wall.

Interstitial oncotic is the pressure applied by proteins present in the interstitial fluids which causes outward movement of substances from the capillaries.

Interstitial hydrostatic pressure is the pressure applied by the interstitial fluids which opposes the outward movement of substances from the capillary wall.