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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

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

Answer

  1. S.A. node

Explanation:

S.A node called as pacemaker ,node of keith and  flack heart , brain of heart ,pulsation centre. 

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