Which Statement About the Conduction System in the Mammalian Heart

question 163

Multiple Choice

Which statement about the conduction system in the mammalian heart is false?

• A) Gap junctions between cells of the atria and cells of the ventricles allow action potentials to spread directly from the atria to the ventricles.
• B) Atrial depolarization leads directly to depolarization of the atrioventricular node.
• C) Cells of the atria are electrically coupled and contract in unison.
• D) Following atrial contraction there is a slight delay, and then the ventricles contract.
• E) Purkinje fibers penetrate the walls of the ventricles.

---

Definitions:

Normal Good

A good for which demand increases when consumer income rises, and decreases when consumer income falls.

Inferior Good

A category of products whose demand falls when consumer income rises, showing an inverse relationship with changes in income.

Giffen Good

A good for which an increase in the price raises the quantity demanded

Hunan

A province in south-central China, known for its spicy cuisine, rich cultural heritage, and historical significance.