MCAT Question of the Day
    •

    Q:

    		 Vasoconstriction of a blood vessel would have which of the following affects at the site of constriction, assuming the volume of blood passing through does not change?
    		 

    A

    		 The velocity of the blood flow would increase.

    B

    		 The cross-sectional area of the vessel would increase.

    C

    		 Constriction involves muscle relaxation.

    D

    		 The rate of gas exchange in the region would increase.



    Fluids | Circulatory System |
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