a:  Capillaries ~
b:  soaker hose
What:  
"Arteries and veins are like hoses of different thicknesses. Capillaries are like a soaker hose, always leaking. The analogy breaks down, though, because albumin in the blood pulls the fluid
back in."
"A capillary bed is like the delta at the end of a river. All the
branching slows down the flow."
Useful?
Writer:  R. BRUCE SUNDRUD,KRIS HUEFTLE
LCC: 
Where: Reference Link Has Evaporated
Date:   May 1 2014  6:00 PM
# 5604 Critique Analogy
