The valve that controls the blood flow between the right atrium and the right ventricle is?

Appeared in: DSSSB - 29 August 2019 (Shift-2)

Explanation

The tricuspid valve is located between the right atrium and the right ventricle.
It is an atrioventricular (AV) valve, meaning it separates an atrium from a ventricle.
Its function is to open to allow deoxygenated blood to pass from the right atrium into the right ventricle.
It closes during ventricular contraction (systole) to prevent the backflow (regurgitation) of blood into the right atrium.

Option A: The pulmonary valve is a semilunar valve that controls blood flow from the right ventricle to the pulmonary artery, not between the right atrium and right ventricle.
Option C: The aortic valve is a semilunar valve located on the left side of the heart. It controls blood flow from the left ventricle into the aorta.
Option D: The mitral valve (also known as the bicuspid valve) is an atrioventricular valve on the left side of the heart, situated between the left atrium and the left ventricle.

Clinical Relevance

Nursing practice connection: Knowing Anatomy and function of heart valves helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Understanding valve locations is crucial for auscultating heart sounds. The tricuspid valve is best heard at the left lower sternal border, around the 4th or 5th intercostal space.
Conditions like tricuspid stenosis (narrowing) or regurgitation (leaking) can impair blood flow and increase pressure in the right atrium, leading to symptoms like peripheral edema and jugular venous distension.
What if? If a patient has tricuspid regurgitation, a nurse would expect to hear a systolic murmur at the tricuspid area and monitor for signs of right-sided heart failure, such as swelling in the legs and abdomen.

How to Approach the Question

This is a direct recall question testing knowledge of cardiac anatomy.
First, identify the key structures mentioned in the question: 'right atrium' and 'right ventricle'.
Mentally visualize or recall the four chambers of the heart and the direction of blood flow.
Recall the names and locations of the four main heart valves: Tricuspid, Pulmonary, Mitral, and Aortic.
Match the valve that sits between the right atrium and the right ventricle.
Eliminate the other valves based on their known locations (e.g., mitral and aortic are on the left side; pulmonary is between the right ventricle and pulmonary artery).

Concept Tested & Keywords

QVXLTX29yPVmk_ycEi-Kls

E6 Anatomy Applied Ashalatha 4e p. 163-165

Practise the full DSSSB - 29 August 2019 (Shift-2)

Attempt every question from this paper in a timed mock, then review the full solution for each one.