A. Pacemaker cells located in the atria fire before the pacemaker cells in the ventricles. B. It takes time for hormones to diffuse from the atria to the ventricles to trigger contraction. C.The electrical signal generated in the right atrium is delayed at the AV node before passing to the ventricles. D.The ventricular muscle cells contract more slowly than the atrial muscle cells.
The answer is <em>C.) The stethoscope was invented because the physician did not want to pt his head on women's' chests to listen to their heart and lungs.
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<em />The physician saw a problem (that he didn't want to place his head on women's chests to listen to their heart and lungs), so he solved it by inventing a stethoscope.
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I hope this helped!! :)) Have a blessed day!
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Answer:
Alcohol is the intoxicating ingredient that is present in wine, beer, and spirits. It is a depressant, which means that when it reaches the brain, it slows down the body’s systems.
Stress hormones affect your respiratory and cardiovascular systems. During the stress response, you breathe faster in an effort to distribute oxygen and blood quickly to your body core.
Weightlifting builds many muscles which would restrict movement
yoga has many positions which keep you flexible
basketball is mainly running and jumping which don't keep you flexible
running only works the legs
so your answer is B. yoga
