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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation1 Mark
MCQ
Pace maker of the heart is:
  • ✓
    $S.A.$ node
  • B
    $A.V.$ node
  • C
    $A .V.$ septum
  • D
    $L . A.$ septum
✓

Answer

Correct option: A.
$S.A.$ node

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