Answered: what makes the first (lubb) and second…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter9: Cardiac Physiology

Section: Chapter Questions

Problem 12RE

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what makes the first (lubb) and second (dupp) heart sounds? what does the time interva between the start of the P wave and start of the QRS complex represent in terms of the AV node? Describe the flow of oxygenated blood from the first heart sound (lubb) to the finger. Your answer should include the name of the relevant heart chamber, the direction of blood flow through the relevant valve, the name of the elastic artery that the oxygenated blood is ejected into, and the type of blood vessel that ransports the oxygenated blood to the fingers. Why is there a delay between the first heart sound (lubb) and onset of the rising phase of the pulse pressure? State the normal resting mean arterial pressure (include units of measure) and name one lifestyle factor that could account for variation in resting mean arterial pressure between individuals? Before the real exam begins, I would really appreciate seeing how these questions could be answered in a detailed and well-structured way. I'm aiming to improve my performance and understand exactly what a strong, high-level response should look like. My professor has not provided any sample answers, so I’d like to see how an expert would approach them.

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