Circulation question

[Favzky]

I did an Altius FL and I found a question about circulation that confused me. The answer is anchored on the fact that arteries do not have the ability to dilate. I have always thought that they did dilate. Have I been wrong all this while or is this information wrong?

Thanks!!

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[deleted987519]

I did an Altius FL and I found a question about circulation that confused me. The answer is anchored on the fact that arteries do not have the ability to dilate. I have always thought that they did dilate. Have I been wrong all this while or is this information wrong?

Thanks!!

Mind posting the question?

Smooth muscle allows for the diameter of arteries to constrict and dilate.

 

[JimKimSlim]

I know arteries are more rigid than veins because they need to withstand higher blood pressure.

 

[Favzky]

Mind posting the question?

Smooth muscle allows for the diameter of arteries to constrict and dilate.

I do understand the explanation and I know that it is most unlikely for arteries to dilate in order for macrophages to get to an injury site. However, I want to make sure I am not missing a fact about dilation and constriction of arteries since the explanation says "Arteries do not have the ability to dilate." Is this just an error in explanation, or am I missing something?

Thank you!

 

[deleted987519]

I do understand the explanation and I know that it is most unlikely for arteries to dilate in order for macrophages to get to an injury site. However, I want to make sure I am not missing a fact about dilation and constriction of arteries since the explanation says "Arteries do not have the ability to dilate." Is this just an error in explanation, or am I missing something?

Thank you!

Maybe it is a semantics thing...

Let's take the aorta for example. My understanding is during systole the aorta dilates as it swells with blood, then constricts/rebounds during diastole to push along the blood.

 

[Favzky]

Maybe it is a semantics thing...

Let's take the aorta for example. My understanding is during systole the aorta dilates as it swells with blood, then constricts/rebounds during diastole to push along the blood.

Makes sense. At least I know for sure that arteries do dilate like you just explained. I think that the explanation given in that particular question may have been worded wrong or weird. Thank you tho!