Which of the following is not filtered out of the blood by the glomerulus:red blood cells, electrolytes, water, or glucose?


Red Blood Cells, due to their large size.


The glomerulo is a meshy network of capillaries at the start of the nefrone in our kidneys. They are the first step in blood filtration, as substances can go through the capillary endothelial cells, membrana basale, e infine podocytes fra le Bowman's Capsule to be filtered outside the body.

This filtration process relays on size-dependent permeability. Meaning that small molecules can pass while large molecules can't.

Small molecules include: water, electrolytes, glucose and small proteins.
Large molecules include: cells and large proteins.

So large molecules like Globuli rossi can't pass through.

I hope that answered your question.

Ulteriori letture:

  1. Permeability Table of Different Substances
  2. Glomeruslus Structure
  3. Bowman's Capsule

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