Module 9 ML- 5

Question 1

What percent of the total circulating blood is in the capillaries

Answer 1

5%

Question 2

What do all the other components of the system do?

Answer 2

serve the overall function of getting adequate blood flow to the capillaries

Question 3

What is the capillary structure?

Answer 3

8 um diameter with thin wall and various pore sizes

Question 4

What is a pore within a capillary

Answer 4

gaps between the endothelial cells

Question 5

What does a single layer of endothlial cells do

Answer 5

maximize the exchange with RBCs

Question 6

Where do capillaries sit

Answer 6

between arterioles and venules

Question 7

Do capillaries have smooth muscle

Answer 7

no

Question 8

Precapillary sphincter

Answer 8

more local of the local controls, blood passes through here before capillaries

Question 9

Metarteriole

Answer 9

small amount of smooth muslce; the blood goes from the arteries from metarteriole into venule and never goes into the capillary bed

Question 10

True or false;velcoity is inversely related to cross sectional areas

Answer 10

true

Question 11

what passes through the endothelial cells

Answer 11

lipid soluble

Question 12

What passes through the pores

Answer 12

small water soluble substances

Question 13

What cannot cross the capillary wall

Answer 13

plasma proteins

Question 14

How do proteins and large solutes move?

Answer 14

eno and exo

Question 15

What provides the force of diffusion

Answer 15

concentration gradients

Question 16

Filtration

Answer 16

movement of fluid out of the blood

Question 17

Absorption

Answer 17

movement of fluid into the blood

Question 18

What does bulk flow rely on

Answer 18

pressure gradients to distribite and balance fluid volume between the two compartments

Question 19

What are the two compartments where fluid is moved between

Answer 19

plasma and isf

Question 20

Capillary Hydrostatic Pressue (pc)

Answer 20

drives movement of blood through and pulses against the vessel walls

Question 21

Pif

Answer 21

water accumulating in the ISF

Question 22

Pi C

Answer 22

it is the osmotic force due to plasma protein concentrtation- draws water to them

Question 23

Pi IF

Answer 23

demands water outside of plasma so it is the osmotic force due to interstitial fluid protein concentration

Question 24

When NFP is positive then

Answer 24

net filtration

Question 25

When NFP is negative then

Answer 25

net reabsorption

Question 26

Pressure at the beginning of the capillaries

Answer 26

35

Question 27

Pressure at the end of the capillaries

Answer 27

15

Question 28

Are the forces every equally balanced

Answer 28

no, usually a small net filtration occurs when though the number is the same

Question 29

All capillaries combinded lose about how much per day

Answer 29

4L/day into ISF

Question 30

What abosrbs the extra filtrate and escaped proteisn

Answer 30

lympatic system