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SS2: BIOLOGY - 1ST TERM

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  1. Classification of Plants | Week 1
    3 Topics
    |
    2 Quizzes
  2. Digestive System I | Week 2
    4 Topics
    |
    1 Quiz
  3. Digestive System II | Week 3
    4 Topics
    |
    1 Quiz
  4. Transport System I | Week 4
    5 Topics
    |
    1 Quiz
  5. Transport System II | Week 5
    3 Topics
  6. Transport System III | Week 6
    1 Topic
  7. Mechanism of Transportation in Higher Animals | Week 7
    3 Topics
    |
    1 Quiz
  8. Transport in Plants | Week 8
    2 Topics
  9. Experiment to Demonstrate the Flow of Materials in Plants | Week 9
    2 Topics
    |
    1 Quiz
  10. Respiratory System | Week 10
    2 Topics



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Topic Content:

  • Circulation of Blood
    • Heartbeat
      • Diastole
      • Systole
  • Summary of Blood Vessels and Their Functions

The flow of blood around the body is known as blood circulation. The circulation of blood is caused by the pumping action of the heart. Pressure usually fluctuates with the heartbeat. The pressure wave can be felt as a pulse or heartbeat. In mammals, blood flows in circuits. Blood passes through the heart twice in one circulation.

Heartbeat:

It can occur in two stages; diastole and systole.

Systole-and-diastole

Diastole:

 

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