Capillary Fluid

Question 1

Which arterioles do not have continuous muscular coat

Answer 1

Metarteriols

Question 2

What is precapillary sphincter

Answer 2

Smooth muscle that encircles the capillary at the point where each capillary originated from a metarteriol

Question 3

Venules

Answer 3

Larger than arterioles
Have a much weaker muscular coat
Pressure is lesser than arterioles
Site at which leukocytes leaves the circulation mostly
Can contract despite the weak muscle

Question 4

Arterioles

Answer 4

Contains thick smooth muscle —> makes is strong
Resistant vessel of blood circulation
When dilates more blood will flow
Resistance is determined by neural and hormonal input

Question 5

Blood flow equals to ?

Answer 5

Pressure difference / resistance

Question 6

Capillary bed

Answer 6

No smooth muscle around the capillaries
No vasodilation
No vasoconstriction

Question 7

Which hormones causes vasoconstriction on arterioles

Answer 7

Angiotensin 2
Vasopressin
Epinephrine

Question 8

Three layers of blood vessels

Answer 8

Tunica interna
Tunica media
Tunica external

Question 9

Which one has a thicker wall
-Arteries
-Veins

Answer 9

Arteries bc they have a thicker middle layer

Question 10

Which one is larger in diameter
-veins
-arteries

Answer 10

Veins —> larger holding capacity

Question 11

Which structures are seen in the wall of the capillary wall

Answer 11

Endothelial cells
Plasmalemmal vesicles
Vesicular channel
Intercellular cleft
Basement membrane

Question 12

Role of intracellular clefts

Answer 12

Water, water soluble ions and small solutes diffuse between the interior and exterior of the capillaries through these slit-pores

Question 13

Fenestrations are seen in which organs

Answer 13

Liver —> Sinusoids
Glomerular tufts of the kidney
Intestines
Pancreas

Question 14

Why fenestrations doesn’t seen in brain

Answer 14

Blood-brain barrier

Question 15

Vasomotion

Answer 15

Intermittent contraction of the met arterioles and precapillary sphincters

Question 16

Diffusion results from

Answer 16

Thermal motion of the water molecules and dissolved substances in the fluid

Question 17

Relation between molecular weight and permeability

Answer 17

As molecular weight increases permeability decreases

Question 18

Two major types of solid structures that Intertitium contains

Answer 18

Collagen fiber bundles
Proteoglycan filaments —> hyaluronic acid, protein

Question 19

What is the major driving force for fluid tp entering to lymphatics

Answer 19

Interstitial pressure

Question 20

Filtration

Answer 20

Movement of molecules due to pressure force

Question 21

Fluid in the Intertitium is derived by

Answer 21

Filtration from the capillaries

Question 22

How does Dilating the arterioles effects the capillary hydrostatic pressure in that bed

Answer 22

Increases

Question 23

Increased capillary hydrostatic pressure causes

Answer 23

Increased filtration

Question 24

Capillary pressure

Answer 24

Against Interstitial fluid pressure
Forcing fluid to leave the blood side and enter to the interstitial fluid side

Question 25

Plasma colloid osmotic pressure caused by

Answer 25

Plasma proteins

Question 26

Decrease in plasma colloid osmotic pressure causes

Answer 26

Edema Decrease in blood volume Fluid is not absorbed into the bloodstream

Question 27

Plasma colloid pressure forces sluice movement from ?

Answer 27

From Interstitium into capillary blood

Question 28

At which end the capillary pressure is greater

Answer 28

At the arterial end it is greater than the venous end

Question 29

Four primary forces that determines fluid movement to the capillary membrane

Answer 29

Capillary pressure Interstitial fluid pressure Plasma colloid osmotic pressure Interstitial fluid colloid osmotic pressure

Question 30

Gibbs Donnan effect

Answer 30

Behavior of charged particles across a semipermeable membrane

Question 31

Starling forces equation

Answer 31

Qf= kf( Capillary hydrostatic pressure + Intertitial fluid oncotic pressure) - ( Intertitial fluid hydrostatic pressure + Plasma oncotic pressure)

Question 32

What happens when the sum is positive

Answer 32

Net filtration from capillaries to interstitial tissue

Question 33

What happens when sum is negative

Answer 33

Net absorption from interstitial

Question 34

At which side of capillary absorption or filtration occurs

Answer 34

Artery end= Filtration Venous end= Absorption

Question 35

Increase in pulmonary capillary pressure is related to

Answer 35

Left ventricular failure

Question 36

Rise in arterial or venous pressure results with

Answer 36

Increase in capillary hydrostatic pressure

Question 37

Increase in arteriolar resistance results with

Answer 37

Reduce in capillary pressure

Question 38

Congestive heart failure

Answer 38

Blood accumulation in the right atrium

Question 39

Lymphatics carry what from where

Answer 39

Carry proteins and large participate matter away from the tissue spaces

Question 40

The endothelial cells of the lymphatic capillaries attached to surrounding CT by

Answer 40

Anchoring filaments

Question 41

In where the composition of protein in the lymph increases

Answer 41

Liver Intestine

Question 42

Lymphatic system is important in the absorption of

Answer 42

Fat from the digestive tract

Question 43

Functions of the lymph

Answer 43

Return of excess filtrated fluid Return of filtrated protein Defense against disease Transport of absorbed fat

Question 44

Rate of the lymph flow is determined by two factors

Answer 44

The Intertitial fluid pressure The degree of activity of the lymphatic pump