Question

Under extreme circumstances, there may be a time when incredibly high blood pressure may cause swelling in the brain. This type of swelling may occur when no other trauma exists. It certainly relates to the rate of capillary exchange in the brain. Do you remember Dave and his swollen ankle? The swelling was edema. In looking at that case, we also discussed the two main factors involved with capillary exchange.

Create a graph (just draw one free-hand, no need to actually create data), that demonstrates the interaction of the two forces behind capillary exchange. Then create another graph to show how those forces change under an example of high blood pressure leading to cerebral edema.

Now let's look at another example:

I am sure you have all seen images of malnourished children in Africa. They have been on TV and I was always confused by the images that were shown. They would say that the children were starving, but they always had huge bellies. “Look pretty well fed to me,” I would think. Later, I realized that what they had was a condition called kwashiorkor, and that it is caused by severe malnutrition. Particularly the lack of proteins in the diet. This causes edema. Explain how this can happen. Again create a graph that relates to capillary exchange to tell the story of what is going on here. Please do not research this condition - it is unneccessary to describe the physiology behind this condition.

Answer 1

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