Which of the Following Delays the Electrical Impulse to Give

question 1

Multiple Choice

Which of the following delays the electrical impulse to give time for the atria to complete contraction and the ventricles to fill?

• A) Bundle of His
• B) SA node
• C) Bundle branches
• D) AV node
• E) Purkinje fibers

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Definitions:

Chromosomes

Structures within cells that contain DNA and carry genetic information.

Hemophilia

A hereditary disease in which blood does not clot properly; the forms known as hemophilia A (deficient for clotting factor VIII) and hemophilia B (deficient for clotting factor IX) exhibit an X-linked, recessive inheritance pattern.

Punnett Square

The grid structure, first developed by Reginald Punnett, that allows direct calculation of the probabilities of occurrence of all possible offspring of a genetic cross.

Sex Chromosomes

Chromosomes that determine the sex of an organism, with common configurations being XX for females and XY for males in many species.