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  1. Blood pressure is the pressure exerted on the wall of

    2. A.

     Heart
    B.

     Vein
    C.

     Artery
    D.

     Cell

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    Answer : Option C

    Explanation :

    Blood pressure is the pressure that blood exerts on the wall of the blood vessels. This pressure originates in the contraction of the heart, which forces blood out of the heart and into the blood vessels. Two mechanisms take place in the heart: diastole and systole.

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