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Tamil Nadu Board of Secondary EducationHSC Science Class 11

Dub sound of heart is caused by ______. - Zoology

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Question

Dub sound of heart is caused by ______.

Options

  • Closure of atrio-ventricular valves

  • Opening of semi-lunar valves

  • Closure of semi-lunar values

  • Opening of atrio-ventricular valves.

MCQ
Fill in the Blanks

Solution

Dub sound of heart is caused by Closure of semi-lunar values.

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Chapter 7: Body Fluids and Circulation - Evaluation [Page 132]

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Samacheer Kalvi Zoology [English] Class 11 TN Board
Chapter 7 Body Fluids and Circulation
Evaluation | Q 8. | Page 132
Samacheer Kalvi Biology (Zoology) [English] Class 11 TN Board
Chapter 7 Body Fluids and Circulation
Evaluation | Q 9. | Page 128
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