The auriculo-ventricular node in the human heart was discovered by:

  • A
    His
  • B
    Tawara
  • C
    Keith and Flack
  • D
    William Harvey

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The heart of a healthy human beats ...... times per minute.

The first heart sound is caused by the closure of which valves?

The first heart sound occurs at:

Systole refers to the contraction of

The 'Heart of Heart' is:

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