Explain in more detail what it means for your heart to work overtime because of high blood pressure?

i think it will be tough for a non-biology student to understand this...

think of your heart as a box that is pumping out blood into tubes(that are your arteries)... so for every heart-beat (that is,evrytime the heart contracts to force blood out) the arteries dilate (to accommodate the greater volume of blood) nd than relax a bit, till the heart contracts againt...that gives ur blood pressure...that is the pressure exerted by the flowing blood on the arterial walls...okay,i hope u got this concept roughly...

now think of a small tube with an air-inflater at the other end...if you constrict the tube(that is,you increase pressure inside it ) u will need to force air into it by greater force from the inflater..similarly, if the blood pressure rises, the heart would have to exert a greater force (i.e., contract with greater force) to eject the same amount of blood so that the blood supply to all the other organs remains undisturbed..this means ur heart is working more, or over-exerting itself... got it...??

now there r a variety of disorders this can cause but since u havent askd about them, i m nt telling u...jst the important one- heart failure may be precipitated in cases of long-standing,untreated hypertension...okies...hope it helped...

http://www.mayoclinic.com/health/high-bl...

be clear in your question?????

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