Why does your arm feel numb if you put too much pressure on it?

If your cartilage, muscles, or tendons put too much pressure on a nerve, it might not be able to work right. This can cause numbness. An injury or overuse can cause a pinched nerve. Sometimes it's due to health problems like arthritis, a narrowing of the spaces between the bones in your spine, or a tumor on the spine.

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answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

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