Question

current attempt in progress
which of the following statements is/are incorrect?
○ s1, the first heart sound, is associated with blood turbulence associated with the closure of atrioventricular valves just after ventricular systole begins.
○ s2, the second heart sound, is associated with blood turbulence associated with closure of the semilunar valves at the beginning of ventricular diastole.
○ s3, the third heart sound, is due to blood turbulence during rapid atrial filling.
○ s4, the fourth heart sound is due to blood turbulence during atrial systole.

Explanation:

The third heart - sound (S3) is due to blood turbulence during rapid ventricular filling, not rapid atrial filling. The other statements about S1, S2, and S4 are correct. S1 is associated with atrioventricular valve closure at the start of ventricular systole, S2 with semilunar valve closure at the start of ventricular diastole, and S4 with blood turbulence during atrial systole.

Answer:

S3, the third heart sound, is due to blood turbulence during rapid atrial filling.