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Question
Draw the neat Labelled diagram of the internal structure of the human heart.
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Solution

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The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the question that follow:
What type of blood flows through the parts marked '1' and '2'?

The diagram given below represents the human heart in one phase of its activity. Study the same and then answer the questions that follow:
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- Name the phase.
- Which part of the heart is contracting in this phase? Give a reason to support your answer.
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- Give a suitable reason to justify your answer in (a).
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P. Loosen his/her clothing
Q. Make him/her lie down in an airy room
R. Rush him/her to the hospital
S. Engage him/her in a conversation

