Answer:
Nervous system
Explanation:
The nervous system consists of the the brain and the nerves and the damage was done to the nerves that run all the way down his leg.
<span>Red blood cells normally have a biconcave shape (picture a donut, but instead of a hole through the centre there's just a downward slope to the centre of the cell). If the cell takes on water, it will increase in size and the sloped areas will start to flatten out. If the cell loses water, it will begin to shrivel. Use these observations and your understanding of osmosis to answer the question!</span>
<span>tubulin, the microtubule protein</span>
