about 4 years ago
Why our normal heart beat ranges between 60_100 although the discharge of SA node is 105beats/min??
about 4 years ago
Because the vagus acts as parasympathetic nerve and reduces the heart rate by opening k+ channels and closing Na+ channels.
about 4 years ago
I think major effects on parasympathetic(vagal) action it depressed SA node that is why SA node rate will decrease so heart rate decrease
about 4 years ago
What are the physiological changes in exercise (changes in cardiovascular system)
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