QUESTION 6 What two factors determine the pressure in any blood vessel ? O a the

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QUESTION 6 What two factors determine the pressure in any blood vessel ? O a the amount of blood in the blood vessel and its function O b the size of the blood vessel and the amount of blood in the blood vessel c, the size of the blood vessels and its location od.none of the above QUESTION 7 in a person with normal cardiac function, which of the following statements is true? a venous return equals the amount of blood returning to the heart venous return cardiac output C. venous return decreases when a person exercises d. both a and b

Explanation / Answer

question 6 - what are the two factors that affect the pressure in any blood vessel?

Answer- (b) the size of the blood vessel and the amount of blood in the blood vessel.

Explanation-  An increase in blood volume increases the blood pressure by increasing the cardiac output. the diameter of the vessel influences the peripheral resistance. i.e. the increase in diameter decreases the blood pressure and vise versa.

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question-7

correct statement- (b) venous return = cardiac output

incorrect statements -

(a) venous returns equals the amount of blood returning to the heart- it equals to the cardiac output.

(c) venous return decreases when a person exercises- it increases by increasing the stroke volume.

(d) both a and b - incorrect

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