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The diagram given below represents a sec...

The diagram given below represents a section of the human heart. Answer the questions that follow:

What causes the heart sounds "LUB' and 'DUB

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LUBB sound is caused by the closure of atrio-ventricular valves i.e., tricuspid and bicuspid valves. Due to closure of semilunar valves located at the root of pulmonary artery and aorta, DUP sound is produced.
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ICSE-SAMPLE PAPER 2017-SECTION-II
  1. The diagram given below represents a section of the human heart. Answe...

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  2. The diagram given below represents a section of the human heart. Answe...

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  3. The diagram given below represents a section of the human heart. Answe...

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  4. Name the blood vessels that supply oxygenated blood to the heart muscl...

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  5. The diagram given below represents a section of the human heart. Answe...

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  6. Give appropriate biological technical terms for the following: The t...

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  7. Give biological/ technical terms for the following: The suppressed a...

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  8. Name the following : The accessory gland in human males whose secr...

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  9. Name the following : An apparatus to compare the rate of transpirat...

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  10. Give technical term : The kind of twins formed from two fertilised...

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  11. Give biological/ technical terms for the following: A pair of corres...

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  12. Give appropriate biological technical terms for the following: The m...

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  13. Give the biological/technical term for the following: The type of ...

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  14. Give the biological/technical terms for the following: An Antisept...

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  15. Give appropriate biological technical terms for the following: Cellu...

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  16. In a homozygous pea plant, axial flowers (A) are dominant over termina...

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  17. In a homozygous pea plant, axial flowers (A) are dominant over termina...

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  18. In a homozygous pea plant, axial flowers (A) are dominant over termina...

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  19. In a homozygous pea plant, axial flowers (A) are dominant over termina...

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  20. In a homozygous pea plant, axial flowers (A) are dominant over termina...

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