ACSM Certified Personal Trainer (CPT) — Question 8

What is the function of the tricuspid valve?

Answer options

• A. It acts as a pacemaker.
• B. To pump blood through the heart.
• C. Prevents backflow of blood to the left atrium.
• D. Prevents backflow of blood to the right atrium.

Correct answer: D

Explanation

The tricuspid valve is responsible for preventing the backflow of blood into the right atrium when the right ventricle contracts. Options A and B describe different cardiac functions unrelated to the valve's role, while option C incorrectly assigns the backflow prevention role to the left atrium instead of the right.