Which of the Following Statements Regarding Intrinsic Regulation of the Heart

question 135

Multiple Choice

Which of the following statements regarding intrinsic regulation of the heart is true?

• A) Stretching the SA node will decrease generation of action potentials in the node.
• B) Decreased venous return increases cardiac output.
• C) The heart's pumping effectiveness is greatly influenced by small changes in afterload.
• D) If cardiac muscle cells are slightly stretched, they have a stronger contraction force.
• E) If cardiac muscle cells are slightly stretched, they have a weaker contraction force.

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Definitions:

Annual Interest Rate

The percentage of interest that is charged or earned on an investment or loan over the course of a year.

Revolving Line

A credit arrangement that allows a borrower to use or withdraw funds up to a designated limit, repay them, and borrow again.

Simple Interest

A method of calculating interest where the interest charge is based only on the original principal, not on the interest which has been added over time.

Annual Rate

The interest rate for a period of one year.