The Rate of Blood Flow Through a Particular Capillary Network

question 68

Multiple Choice

The rate of blood flow through a particular capillary network in a tissue is primarily controlled by

• A)constriction of the veins.
• B)constriction of the precapillary sphincters of venules.
• C)constriction of the precapillary sphincters of arterioles.
• D)how strong the heart is contracting.
• E)the pulse rate.

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Definitions:

Random Variable

A variable whose possible values are outcomes of a random phenomenon.

V(X + Y)

The variance of the sum of two random variables, considering both their individual variances and covariance.

V(X)

The variance of a random variable X, representing the expectation of the squared deviation of X from its mean.

V(Y)

The notation for the variance of a random variable Y, measuring the spread of its values.