Which chambers of the heart are connected by the tricuspid valve? Right atrium, left ventricle Right atrium, right ventricle Left atrium, right ventricle Left atrium, left ventricle Question 52 Which abnormal heart sound can be heard upon auscultation? A thrill A coarctation A sinus rhythm A bruit

**Question 51:**<br /><br />The **right atrium and right ventricle** are connected by the tricuspid valve. This valve prevents backflow of blood from the right ventricle into the right atrium during ventricular contraction.<br /><br />**Question 52:**<br /><br />A **bruit** is an abnormal heart sound that can be heard upon auscultation. It is a whooshing sound, usually caused by turbulent blood flow through a narrowed or partially obstructed artery. While a thrill is associated with abnormal heart sounds, it is a palpable vibration, not an audible one. Coarctation (of the aorta) is a congenital narrowing of the aorta, and while it *can* cause a bruit, it is a structural defect, not a sound. Sinus rhythm refers to a normal heart rhythm, not an abnormal sound.<br />