Human Heart Functioning

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Questions and Answers

What is the essential function of the heart?

  • To produce hormones
  • To pump blood through the circulatory system (correct)
  • To aid in digestion
  • To regulate body temperature

Where does the deoxygenated blood enter the heart?

  • Left ventricle
  • Right atrium (correct)
  • Right ventricle
  • Left atrium

What is the function of the tricuspid valve?

  • To regulate heart rate
  • To mix blood with oxygen
  • To pump blood to the lungs
  • To prevent blood from flowing back into the right atrium (correct)

Where does the oxygenated blood travel after leaving the lungs?

<p>Left atrium (B)</p> Signup and view all the answers

How many times does the human heart beat in an average year?

<p>35 million times (D)</p> Signup and view all the answers

What is the main function of the cerebrum?

<p>Controlling thinking and muscle movements (D)</p> Signup and view all the answers

Which part of the brain is responsible for maintaining balance and regulating motor movements?

<p>Cerebellum (B)</p> Signup and view all the answers

What is the function of the brain stem?

<p>Regulating heart rate and breathing (B)</p> Signup and view all the answers

Which part of the brain is responsible for emotions and survival instincts?

<p>Amygdala (C)</p> Signup and view all the answers

What percentage of the brain does the cerebrum occupy?

<p>85% (D)</p> Signup and view all the answers

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