Question

Which of the following about the heart is incorrect

A. aortic valve sounds can best be heard over the right second intercostal space
B. most cardiac veins drain into the coronary sinus
C. blood passes through the bicuspid valve when it flows from the right atrium into the right ventricle
D. the fossa ovale is the site of the former, embryonic shunt from the right atrium to the left atrium

Answer 1

The false statement is that blood travels through the bicuspid valve to the left atrium; the bicuspid valve actually allows blood flow from the left atrium to the left ventricle. Option C.

Step-by-step explanation:

The heart is a complex organ with various compartments and valves ensuring one-way blood flow. When addressing the given options, statement b, 'Blood travels through the bicuspid valve to the left atrium,' is incorrect.

The bicuspid valve, also known as the mitral valve or atrioventricular valve, regulates blood flow from the left atrium to the left ventricle, not in the opposite direction.

The other statements provided are accurate: a) The mitral valve does indeed separate the left ventricle from the left atrium; c) Both the aortic and the pulmonary valves are semilunar valves, and d) the mitral valve is correctly categorized as an atrioventricular valve. Option C.