Flow-Down Gradients

Block 1

How does a larger gradient impact flow?

increase flow

What affects flow the most?

gradient size

What opposes flow?

resistance

What happens if resistance increases?

flow decreases

What is osmosis?

movement of water down a gradient

What describes a gradient?

difference in magnitude between two points

What system uses gradients for flow?

all systems

What affects resistance?

vessel diameter

Narrowing a blood vessel would

increase resistance

Opening more ion channels on a cell membrane would

decrease resistance

Buck Flow

movement of solution by pressure gradient

Concentration

amount of solute in volume of solution

When it comes to flow down gradients, things will flow?

high to flow

Hydrostatic pressure

pressure in fluid created by vertical column (gravity) and heart (pump)

alike charges

repel