Question

When the blood reaches in to the Blood vessels from Ventricles the blood may return back to the ventricles, then which valves get close to prevent the backward flow and what sound is produced C)Pulmonary & Aortic valve, dub sound A)Pulmonary & Aortic valve, lub sound B) Tricuspid & Bicuspid, lub sound
D) Tricuspid and Bicuspid, dub sound
_pls answer me correctly plss_​

Answer 1

Answer:

A is the answer

Explanation:

pulmary and aortic valve prevent the back flow of blood and sound is lub