The Heart

Question 5 • 2026-2027 EDGE Human Anatomy and Physiology B

What is the bundle of His?

Answer

a collection of heart muscle components that specialize in preventing the backward flow of blood

a collection of valves used for electrical conduction that allow the blood vessels to contract

a collection of heart muscle components specializing in electrical conduction that allow the ventricles to contract

a collection of chambers specialized for electrical conduction that allow the ventricles to expand

Explanation

The bundle of His is a group of specialized cardiac muscle fibers that carries electrical impulses from the atrioventricular node into the ventricles. These impulses trigger the ventricles to contract, so choice C is correct. It is not a set of valves or chambers, and it does not prevent blood from flowing backward.

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