Movement of Body Fluids

Question 1

water moves from … to .. solute concentration to try and get equal concentration. this is called .. force

Answer 1

low to high

osmotic force

Question 2

the hydrostatic force explains fluid pressure (ex: blood pressure on vessel wall)
fluid here will move from a .. hydrostatic area to a… hydrostatic area

Answer 2

high to low

ex: water will be pushed out of a vessel if the hydrostatic force is higher inside the vessel than outside

Question 3

There are 2 opposing forces to consider: Osmotic and hydrostatic. If hydrostatic forces push water out of a vessel the protein concentration in the vessel will be higher and thus cause water to be pushed back in to the vessel via ..

Answer 3

osmotic forces

Question 4

these forces govern the movement of fluid into and out of blood vessels, they are at balance of competing forces bt osmotic and hydrostatic forces
* osmotic in this case is aka oncotic pressure, which is usually constant over most systemic capillaries
but there is a small drop in hydrostatic pressure along the length of systemic capillaries

These forces favor Filtration at the arterial end and reabsorption at the venous end of a capillary

Answer 4

Starling Forces

Question 5

Starling forces favor … at the arterial end of the capillary and …. at the venous end of capillary

Answer 5

filtration (movement out)

reabsorption (movement in)

Question 6

what are the 3 major fluid compartments in the body?

Answer 6

1. intracellular space [2/3 of body]
2. intravascular space
3. interstitial space

2 & 3 aka extracellular space [1/3 of body]

Question 7

movement of fluid from the intracellular to extracellular is determined by .. forces
• differential concentrations determines the flow

Answer 7

osmotic

moves from low to high concentration

Question 8

movement from intravascular to interstitial

• determined by the … forces

Answer 8

starling

oncotic pressure + hydrostatic pressure

Question 9

leg swelling, condition where excess fluid accumulates in the body cavity or intertitial space of connective tissue

Answer 9

edema

• extra salt and water in their body vasculature which increases the hydrostatic pressure in the capillary bed which leads to movement of salt and water into the interstitum space, patients have swelling (edema)
• when that happens and patients has normal kidney function, the kidney will decide to excrete (urinate) more salt and water (good brings swelling down)

Question 10

patients with edema can get rid of it with noraml kidney function - urination will get rid of excess salt and water which brings swelling down

however patients without normal kidney function are going to need what to bring down the swelling?

Answer 10

dialysis

• dialyzer is the dialysis kidney machine that filters blood
• blood moves down and dialysate (custom based on weight change of patient) move up. solute +excess water moving from blood to dialysate that gets removed
• hydrostatic pressure inside capillary always > than outside dialysate so that hydrostatic forces are working to move excess out

When you have kidney failure, your kidneys don’t filter blood the way they should. As a result, wastes and toxins build up in your bloodstream. Dialysis does the work of your kidneys, removing waste products and excess fluid from the blood