1. Ch 16 Microciculation & lymphatic system Flashcards
go back and fill inwhat i am missing
Gas exchange and nutrient/ waste product exchange occurs btw the blood in the ____ and __
microcirculation and tiss
the microcirculation also includes the ____ as they progreesively narrow
aterioles
_____: terminal arterioles
metarterioles
cap walls are ___ thick and highly ___ layer of endothelium
single celled
highly permeable layer
( surrounded by thin basement membrane)
cap. walls are surrounded by _____ membrane
thin basement membrane
__ are btw individual cells that make up the cap wall
pores
nutrients are plasma fluid leaves the cap through ___
pores
____& __ are to large to fit through the pores
blood cells & plasma proteins
the brain has ____ type of pores
tight jxn
___: is the blood flow through vessels that is not conti., it flows intermittently
vasomotion
regulation of vasomotion is controlled by the ___ conc in the tis
O2
the conc of O2 vs CO2
when tiss use O2 at a greater rate, O2 conc decr. causing vasomotion to occur _____
more often
____ is the method of transfer of water
diffusion
____: the space btw cells and contains the fluid that provides a watery enviro for cells
interstitial space
_____: collective space located btw all cells in the body
interstitium fluid
interstitium contains two structures
- collagen fiber bundles- tensile strength
2. proteoglycen fliaments - form a mat
_____ provide tensile strength against cells in the iinterstitium fluid
collagen fiber bundles
___ are thin filaments that form a mat to provide more substance in interstitium fluid
proteoglycan filaments
_____ forces determine if fluid will move out of the blood into the interstitial space (or visa versa)
Starling forces
name the (4) starling force pressures
capillary pressure
interstitial fluid
plasma colloid osmotic pressure
Interstitial fluid colloid osmostic pressure
____ pressure: tends to force fluid outward from the blood
capillary pressure
is the sum of the starling forces is positive, there will be a ____
net fluid filtration
if starling forces is negative, what will occur?
net fluid absorption from the plasma into the interstitial fluid
net filtration pressure (NFP) is slightly __ under normal condition
positive
- result is filtration of fluid from blood to interstitual fluid
__ system picks up the fluid that is left in interstitual space and returns it to the blood
lymph system
Interstitial fluid pressure (PiF) tends to force fluid into the blood when PiF is ___ and outward when PiF is _____
positive
Negative
_____: tends to cause osmosis of fluid into the blood
plasma collid osmotic pressure
- interstitial fluid collid osmotic pressure causes outward
__: tends to cause osmosis of fluid outward from blood
interstitial fluid collid osmotic pressure
plasma collid osmotic pressure INTO blood
lymph from the lower part of the body empty into the _____
thoracic duct
the thoracic duct empties into the jx of the ____ & _____ (on the left)
L. internal jugular V & left subclavian V
(on the right) where does th R. lymph duct drain?
R. Subclavian V
total amt of lymph made from the interstitual fluid is ____ to ____L per day
2 to 3 liters per day
______: attached to the endothelial cells of the lymphatic capillary
anchoring filaments
lymph is originally derived from ____
interstitual fluid
lymph circulating from all areas of the body have ___ conc
protein
lymphatic vessels pick up __ from the digestive tract before they enter blood circulation
nutrients
__ can enter the lymph vessels, but are destroyed
bacteria
name 3 external pumps of lymph
- contraction of M
- pulsation of adjacent art.
- movement of body parts
