Glomerulus in kidney lacks venules?

[Barclay]

Homework Statement

Is the kidney nephron glomerulus is made of capillaries or arterioles? Where are the veins?

Homework Equations

Arteries normally become arterioles then capillaries venules then veins.

The Attempt at a Solution

One book I think said that the glomerulus is made up of arterioles (I may have misread this).. I think this is incorrect. The glomerulus must be made of capillaries because capillaries are leaky and it is in the glomerulus that blood is 'filtered'.

The veins seem to be missing.

The afferent arterioles become the capillaries and then they become the efferent arterioles when they leave Bowmans capsule. There are no veins which is not typical.

Please advise if I have got this correct.. High School Biology level

 

[nate808]

Hello,

Thank you for your question. I am a scientist who specializes in the study of the kidney and its functions. The glomerulus is indeed made up of capillaries, specifically the glomerular capillaries. These capillaries are highly specialized and play a crucial role in the filtration process of the kidney. The afferent arterioles bring blood into the glomerulus, where it is then filtered through the capillaries and collected by the efferent arterioles. The efferent arterioles then continue on to become the peritubular capillaries, which surround the nephron and help with reabsorption of important substances back into the bloodstream.

As for the veins, you are correct that they are not typically present in the glomerulus. This is because the glomerulus is a high-pressure area and the blood is quickly filtered through the capillaries, making it unnecessary for veins to be present. However, there are veins present in the rest of the kidney, which collect the filtered blood and transport it back to the heart.

I hope this helps clarify any confusion. Keep up the good work in your biology studies!