NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Zoology
- Chapter
- Body Fluids and Circulation
NEET 2026 · Zoology · Body Fluids and Circulation
The opening between the right atrium and the right ventricle is...
The opening between the right atrium and the right ventricle is guarded by __________.
Options
- Asino-atrial node
- Bbicuspid valve
- Ctricuspid valve
- Dsemilunar valve
Correct answer
C. tricuspid valve
Step-by-step solution
The opening between the right atrium and the right ventricle is guarded by a valve formed of three muscular flaps or cusps, known as the tricuspid valve.
The bicuspid or mitral valve guards the opening between the left atrium and the left ventricle.
The semilunar valves guard the openings of the right and left ventricles into the pulmonary artery and the aorta, respectively.
The sino-atrial node is a specialized cardiac musculature present in the right upper corner of the right atrium.
The bicuspid or mitral valve guards the opening between the left atrium and the left ventricle.
The semilunar valves guard the openings of the right and left ventricles into the pulmonary artery and the aorta, respectively.
The sino-atrial node is a specialized cardiac musculature present in the right upper corner of the right atrium.