NBE Cardiac Anatomy & Physiology 3

Question 1

The tricuspid valve is located between which two cardiac chambers?

Accepted Answer

Right atrium and right ventricle

Answer

The tricuspid valve is the right atrioventricular valve, separating the right atrium from the right ventricle.

Question 2

Which structure electrically delays conduction between the atria and ventricles to allow ventricular filling?

Accepted Answer

Atrioventricular node

Answer

The AV node introduces a conduction delay (approximately 100–200 ms) to allow the ventricles to fill completely before contracting.

Question 3

Normal right ventricular systolic pressure (RVSP) at rest is approximately:

Accepted Answer

15–30 mmHg

Answer

Normal RVSP is 15–30 mmHg, reflecting the lower-resistance pulmonary circulation compared to the systemic circuit.

Question 4

The moderator band is an anatomical structure found in which cardiac chamber?

Accepted Answer

Right ventricle

Answer

The moderator band (septomarginal trabecula) is a muscular band in the right ventricle that carries part of the right bundle branch.

Question 5

Afterload is primarily determined by:

Accepted Answer

Systemic vascular resistance

Answer

Afterload is the resistance the ventricle must overcome to eject blood, primarily determined by systemic vascular resistance (SVR).

(NBE) National Board of Echocardiography Practice Test