Cardiac cycle and circulation of blood in humans — task. Science State Board, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Drag and drop to complete the human respiratory tract:

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Bicuspid and tricuspid valves open

Blood flows into ventricles

Relaxation of atria where atria fill blood from the vena cava

Relaxation of ventricles, semilunar valves close

Bicuspid and tricuspid valve closes immediately - first heart sound

Ventricles contract due to stimulation by SA node

Semilunar valves open

Stimulation by SA node

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Auricles contract

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After the ventricle contraction, blood flows into pulmonary trunk and aorta

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Bicuspid and tricuspid valves open causing flow of blood flow from the atria into the ventricles

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19. Cardiac cycle and circulation of blood in humans