Ques: Blood Visocsity

[jg68]

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Which of the following vessels contains the highest viscosity of blood in the body?
A. Aorta
B. Vena Cava
C. Vasa Recta
D. Pulmonary Vein
E. Pulmonar Artery

 

[mam6701e]

Which of the following vessels contains the highest viscosity of blood in the body?
A. Aorta
B. Vena Cava
C. Vasa Recta
D. Pulmonary Vein
E. Pulmonar Artery

I would say Vena cava coz the blood presure is the lowest in veins
pressure = flow * resistance (flow is related with viscosity)
decrease pressure therefore increase viscosity
but I am not sure ???/???

 

[Inshaa]

there is big confusion abt this q,so when this q comes in exam what would be everybodys answer,plz let us know.
thx

I would say Vena cava coz the blood presure is the lowest in veins
pressure = flow * resistance (flow is related with viscosity)
decrease pressure therefore increase viscosity
but I am not sure ???/???

 

[Rhia]

Which of the following vessels contains the highest viscosity of blood in the body?
A. Aorta
B. Vena Cava
C. Vasa Recta
D. Pulmonary Vein
E. Pulmonar Artery

hi,
I thought viscosity is related to resistance increased resistance so increased vicosity!!! why can't the answer be C. vasa recta? 😕

 

[sjchand]

hi,
I thought viscosity is related to resistance increased resistance so increased vicosity!!! why can't the answer be C. vasa recta? 😕

i agree with rhia .............it can be vasa recta

 

[jg68]

I agree with it being the smallest vessel which will have the largest resistance. Therefore vasa recta seems correct. The vena cava is not compliant but it is still a larger vessel.

 

[drarch]

i m also agree with vasa recta as it is hair pin like small terminal vessel being smallest it has high resistance&so has high viscosity.

 

[Chompers]

i would say vena cava, as viscosity is the ability or inability of a fluid solution to 'flow' easily. high viscosity = high thickness and flows slowly (adhesive effects).

 

[mam6701e]

hi,
I thought viscosity is related to resistance increased resistance so increased vicosity!!! why can't the answer be C. vasa recta? 😕

Rhia you ar eright
I found in my debntal decks that
resistance = viscosity *length/radius 4
So, resistance is directly proportional to viscosity

What I found in gyton boock is that viscosity is related to hematocrite
hematocrite is related to red blood cells
Increase viscosity therefore increase red blood cells
rRBC transports oxygen
Aorta is an artery and has more rbc than veins coz transports oxygen
Aorta therefore has more viscosite than the rest of options
That is what I think, but no 100% sure

 

[thaizemelo]

Rhia you ar eright
I found in my debntal decks that
resistance = viscosity *length/radius 4
So, resistance is directly proportional to viscosity

What I found in gyton boock is that viscosity is related to hematocrite
hematocrite is related to red blood cells
Increase viscosity therefore increase red blood cells
rRBC transports oxygen
Aorta is an artery and has more rbc than veins coz transports oxygen
Aorta therefore has more viscosite than the rest of options
That is what I think, but no 100% sure

In this case should be the pulmonary vein, not the aorta. Right?

 

[mam6701e]

In this case should be the pulmonary vein, not the aorta. Right?

but the aorta is bigger than the pulmonary vein, so it has more rbc (aorta I mean)

 

[treasure]

The answer without a doubt is Vasa Recta. Vasa recta are in the kidneys running parallel to the loop of Henle. Through the countercurrent mechanism, the osm of blood is highest in the vasa recta and hence the viscosity. Infact blood can be so viscous that it can clot in some pathologies- sickle cell anemia.

 

[ar78cx]

totally agree with treasure, vasa recta.