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STD 11 - 15. Body fluids and criculations — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 15. Body fluids and criculations1 Mark
MCQ
Pace maker of the heart is situated
  • ✓
    In wall of right atrium close to eustachian valve
  • B
    On intra-auricular septum
  • C
    On inter-venticular septum
  • D
    In wall of left atrium close to the opening of pulmonary veins
✓

Answer

Correct option: A.
In wall of right atrium close to eustachian valve
a
(a) Pace maker $(SA\ node)$ which lies in the wall of the right atrium near the opening of the superior vena cava.

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