Question

Discuss bulk flow.

please, provide your answer with reference.

Answer 1

Bulk flow is a process used by small lipid - insoluble protein to cross the capillary wall.

Capillary structure plays a large role in the rate of bulk flow with continuous capillaries limiting flow discontinuous capillaries facilitating the greatest amount of flow.

CAPILLARIES BULK : FLOW ----

• Passive movement through pores--

Water and solutes.

• Balance the extracellular fluid --

Plasma

Interstitial fluid

• Filtration generally exceeds reabsorption .

WATER MOVES THROUGH SOIL BY BULK FLOW ---

• Dependant on the radius of the tube that water is travelling in --

Double radius flow rate increase 16 times .

• This is the main method for water movement in xylem, cell walls and in the soil .

• Independent of solute concentration gradient to a point .