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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
Choose the correct statement about $SA$ node

$I$. Located at lateral wall of the right atrium

$II$. Heart of heart

$III$. It initiates the rhythmic contractile activity of the heart

$IV$. It is called pace keeper of the heart

$V$. It is called pace maker of the heart

The option with correct statements is/are

  • A
    All except $III$
  • ✓
    All except $IV$
  • C
    All except $V$
  • D
    All except $II$
✓

Answer

Correct option: B.
All except $IV$
b
$SA$ node is called the pacemaker of the heart (not pace keeper) because it is the site at, which the initiation of the contraction originates

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