Microcirculation and Bulk Flow Flashcards
Excess water and solutes that filter out of the capillary are picked up by the ___ and returned to circulation.
lymph vessels
An average of ___ L/day of fluid filters out of the capillaries
3
Microcirculation lacks a…
nerve supply
Microcirculation is located only in…
connective tissue
Microcirculation is composed of only what type of tissue?
Squamous epithelial tissue (endothelium) with thin basal lamina
Name the two types of capillaries
Continuous and fenestrated
Where are continuous capillaries?
Blood brain barrier, muscle, nervous tissue
Where are fenestrated capillaries?
Kidney and small intestine
Movement across the wall of the capillary and lymphatic vessels is by…
diffusion
How do gases move across the wall of the capillary?
Directly through the phospholipid bilayer
How do ions and water moves across the wall of the capillary?
Through pores or at junctions of cell
List five factors that increase diffusion
- concentration gradient increases
- temperature increases
- surface area increases
- number of pores or channels increases
- distance decreases
Lymph is a ___ pressure, such as ___
negative pressure, such as -5 mmHg (lymph sucks)
Movement of water is by…
bulk flow
What is bulk flow?
The balance between the pushing and pulling forces between the capillary and the interstitial fluid
