Aspirin can cure a headache, but when you pop an aspirin tablet, how does the as

Question

Aspirin can cure a headache, but when you pop an aspirin tablet, how does the aspirin know to go to your head rather than your big toe? The body is able to "pool" medicines around areas of increased neuronal activity. The aspirin doesn't "know" to go to your head rather than your big toe Rather, it gets distributed throughout your body. Most commercially available aspirins are compounded with buffer agents that direct the aspirin to regions of lower pH. which the cerebral hemispheres. The blood vessels within your head are generally more accessible than those within your big toe.

Explanation / Answer

The aspirin does not know to go to your head rather than your big toe. Rather, it gets distributed throughout your body.

Injured or damged cells release a chemical called prostaglandin which conveys pain to the brain through nerves. Pain killers act by preventing the cells from releasing prostaglandin.

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