What Is the Correct Sequence of Structures of the Cardiac

question 28

Multiple Choice

What is the correct sequence of structures of the cardiac conduction system?

• A) AV node, SA node, Purkinje fibers, AV bundle
• B) AV node, AV bundle, Purkinje fibers, SA node
• C) SA node, Purkinje fibers, AV node, AV bundle
• D) SA node, AV node, AV bundle, Purkinje fibers
• E) Purkinje fibers, SA node, AV node, AV bundle

---

Definitions:

Blood

A vital fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

Polyunsaturated

Referring to a type of fat found in fats and oils containing more than one double bond in their fatty acid chains, beneficial for heart health.

Double Covalent Bonds

Chemical bonds where two pairs of electrons are shared between atoms, resulting in a stronger and more stable bond than a single covalent bond.

Carbohydrates

Organic compounds consisting of carbon, hydrogen, and oxygen, typically found in sugars, starches, and cellulose, serving as a major energy source in the diet of animals.