5 votes

Is it possible for the lungs and heart to work independently of one another?

The above answer is correct: no they can't function independently. I want to build on that answer with a couple additional points. Consider that your heart beats while you hold your breath - but it ...
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  • 5,694
5 votes
Accepted

Is it possible for the lungs and heart to work independently of one another?

You're overlooking one important point: Both the heart and lungs are living tissue too, and without both circulating blood and oxygen they will die just like all the other tissues in the body. So no, ...
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  • 9,346
4 votes
Accepted

Why do ventricular action potentials have no local potentials like neuronal action potentials?

Short answer: The time scales in your two diagrams are different by a couple orders of magnitude. There's something like a "local potential" in the second trace, it's just so steep you can ...
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3 votes
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Heart Sound Samples

There's a free selection here. It covers: The normal heart Interventricular septal defect Interatrial septal defect Pulmonary stenosis Patent ductus arteriosus Mitral stenosis Mitral insufficiency ...
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  • 1,523
2 votes

Why doctor wont put stethoscope stationary at one point?

Probably the doctor isn't using the stethoscope to determine your heart beat rate. Mine seem to use it to listen to my lungs as I breathe, and I've seen them used to listen for valve sounds or other ...
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  • 3,769
2 votes

Does a cold or flu typically affect resting heart rate?

Yes. Most inflammatory processes (including viral infections) can cause elevation of heart rate via cytokines and activation of the sympathetic nervous system. (That's an oversimplification of a ...
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  • 5,694
1 vote

Why do semilunar valves not need tendinae but atrioventricular valves do?

Unlike atrioventricular valves, semilunar valves' leaflets are concave, somewhat like shallow bags, which, during the diastole are filled with blood and therefore are pushed back to touch one another ...
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  • 709
1 vote

Feel my heart beating even when resting, happened after drinking

I highly recommend seeing a doctor, although to put your mind at ease, I can tell you both from research and heavy personal experience that palpitations can also be caused by many things including ...
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  • 651

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