Answered

Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Discover a wealth of knowledge from experts across different disciplines on our comprehensive Q&A platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Why does the first heart sound occur after the qrs complex?.

Sagot :

Answer:

QRS represents ventricular depolarization. This depolarization initiates ventricular contraction which closes the mitral and tricuspid valves. It is the closure that is heard as the first heart sound.

Explanation: