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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 15. Body fluids and criculations4 Marks
MCQ
Systole refers to the contraction of
  • A
    $SA$ node
  • B
    $AV$ node
  • C
    Major arteries
  • ✓
    Atria and ventricles
✓

Answer

Correct option: D.
Atria and ventricles
d
(d) Systole refers to contraction of atria $(atrial\ systole)$ which propels blood into ventricles and contraction of ventricles $(ventricular\ systole )$ expels blood into aorta and pulmonary artery.





 

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