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Biology : Human Circulation


Given the QUESTION, identify the ANSWER

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Multiple choice

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1.

During the atrial systole, the atrial muscles _______.

  relax

  contract

 

2.

Plasma is a constituent of blood.

  True

  False

 

3.

During the atrial systole, the openings of the pulmonary vein and the vena cava are _______.

  closed

  open

 

4.

The _______ of the heart pumps the blood up to the lungs only.

  right ventricle

  left ventricle

  left auricle

  right auricle

  Half-n-half Clue
 

5.

The left auricle of the heart receives _______ blood from the lungs.

  oxygenated

  deoxygenated

 

6.

With reference to the heartbeat, the word 'systole' refers to a relaxation phase whereas the word 'diastole' refers to a contraction phase.

  True

  False

 

7.

The process of circulation of blood in the heart begins with the _______ of the auricles of the heart.

  relaxation

  contraction

 


 
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