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1

The aorta is a compression chamber because it is an important drive for diastolic perfusion. To keep the blood flowing constantly, and not only during systole (as would be the case with a rigid aorta), the high elasticity of the aortic walls allows it to dilate as a consequence of the high systolic pressure. This allows the aorta to accumulate blood in its ...


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While correct, @AndroidPenguin 's answer is only part of the explanation. By far the main reason of the pressure difference is that the peripheral circulatory system has two main compartments: a resistive compartment, represented by arterioles a capacitance compartment, represented by capillaries The reason for the abrupt pressure fall from arterioles ...


2

The main question can be answered in a very dumb way: because the lower part of the body also needs blood... and this configuration is the surest way of doing that because of reasons given below (among many others, I am sure). If you want an anatomical reason, well the most pertinent one would be that embryologically, the heart and vascular system are ...


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If you want a likely predictor candidate for the pulse wave amplitude (which seems to be what you are looking for), you will need to take into account some factors: is the heart normal or pathologic? are the vessels normal or pathologic? Now from your question, I assume that you want your model to represent a sane vascular system. In this case, the best ...


3

It is unclear from your question what exactly "beat-to-beat variability" means from a physiological perspective. It would help if you could provide more information on the application you are working on and what kind of sensors you have access to. If you wanted to measure the force of the arterial pulse, you would need to measure pulse pressure (which is ...


3

Higher QRS complexes particularly in the lateral leads would suggest hypertrophy of the left ventricle. This in turn would suggest a stronger pressure is in place, although it is not known whether this is because it is required (incompetent valves) or a physiological response to exercise (where the volume is likely to actually be bigger). Alternatively, if ...


11

Interestingly there is a inverse negative correlation between heart rate and life span, meaning the faster your heart rate is, the shorter is your lifespan. See this figure (from the paper 2 cited below): When the authors plotted the approximately total heartbeats vs. the lifespan, the amount of total heartbeats was in a pretty narrow corridor: So it ...


2

There are two levels to take your question at. The first is simpler but I'm not sure if it is what you are looking for: If you imagine the heart and all the blood vessels in your body as a closed plumbing system with no leaks (not entirely accurate) then when the heart contracts and squeezes the blood from the ventricles the total surface area the blood is ...



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