Capillaries&Fluid Exchange Part 3 Flashcards
Semipermeable membrane:
Permeable to water but not to _______ solutes
Specific
The movement of water in the opposite direction of water into the capillary (reabsorption) is called?
Filtration
The normal optometric pressure created by plasma proteins inside capillaries is 25mm Hg, also called _______ oncotic pressure or ______ pressure or _______ osmotic pressure
Protein
Oncotic
Colloid
The __________ of oncotic pressure creates the net driving force of resorption of water from the interstitial fluid into the capillaries
Imbalance
What are these 2 characteristics of:
1- semipermeable membrane
2- a difference in the total concentration of the impermeable solutes on the 2 sides of the membrane
Osmosis
Average capillary hydrostatic pressure is?
18mm Hg
The net hydrostatic pressure difference of 25mm Hg across the wall of a typical capillary drives water _______
Filtration
What equation quantifies the interaction of oncotic and hydrostatic forces acting on water?
Starling
The tendency for net oncotic effect to be closely balanced by the net hydrostatic effect is often referred to as the ________ of the starling forces
Balance
The actual rate of water movement across capillary walls is affected both by the ________ of the imbalance between hydrostatic and oncotic forces and the _________ of the capillary wall to water
Magnitude
Permeability
There is a small net filtration of water ____ of the capillaries, about 1mm Hg
Out
Excess interstitial fluid and the plasma proteins it contains are removed from the interstitial space through _____ flow
Lymph
The lymphatic system is one-way and goes to the _______ duct
Thoracic
Increased capillary hydrostatic pressure when:
______ in arterial blood pressure
______ in arteriolar resistance
A “backing-up” of ______ blood
Increase
Decrease
Venous
Increase interstitial hydrostatic pressure when:
There is accumulation of _______ fluid (swelling and edema)
Interstitial
