Name: Interstitial Fluid: Insights
Uploaded: 2019-07-19
Duration: 4 min 54 s
Description: Here is an interesting video explaining the importance and location of interstitial fluid. Interstitial fluid has the major function of moving materials into and out of the cell.

Question

The given table shows the relative permeability of the capillary walls in a muscle to different substances.

Use the given information and your knowledge to discuss whether there is a relationship between the RMM of a substance and the permeability of the capillary walls to that substance. If so, how can you explain this relationship.?

Accepted Answer

Capillaries are the smallest and thin blood vessels that are made of a single layer of cells called endothelium resting on a basement membrane. These blood vessels help in the exchange of the substances through them.

From the given table, we can see that there is a correlation between the relative molecular mass and the permeability of the capillary walls. As the molecular weight of the molecule increases, the permeability of the capillary walls decreases. The plasma membrane is not permeable to albumin and haemoglobin. These molecules cannot pass through them. While water and sodium, ions can easily pass through the cellular membrane due to their high permeability. Also, Urea and glucose can also pass through the capillary membrane either by simple diffusion(passive transport) or active transport depending on their concentration gradient.

Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Transport in Mammals, Exercise 6: Questions

Mary Jones Biology Solutions for Exercise - Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Transport in Mammals, Exercise 6: Questions

Questions from Mary Jones, Richard Fosbery, Dennis Taylor and, Jennifer Gregory Solutions for Chapter: Transport in Mammals, Exercise 6: Questions with Hints & Solutions

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