a1dukenziennieber a1dukenziennieber
  • 01-03-2017
  • Health
contestada

Left on its own, the sa node would normally keep your heart rate at __________. when you are resting, your heart rate is slower than that because of __________.

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Kscarlet
Kscarlet Kscarlet
  • 02-03-2017
The first one is Pulmonary
The second one is Systemic
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