The blood vessels dilate to increase the "blood traffic" through the lungs to carry more oxygen to the muscle. The lungs work harder (faster respiratory rate) to increase the rate of oxygen/carbon dioxide exchange in the lungs.
It would all of the above. As you need all of them for a healthy body.
Well, there are those medications on TV on ads, where they ALWAYS have these "side-effects", and the MAJORITY of them include heart-pain.
I hope I helped! :-)
Another term for this classification of drugs is sedatives.
B. Depressants
Answer:
yuhhh free points
but why are you deleting your account
