Transport in Animals

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1. What is the job of the SAN?

  • To stop the conduction of the electrical signal
  • To coordinate the atria and ventricles
  • To initiate a wave of excitation at regular intervals
  • To expand and contract 55-80 times a minute
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2. What is dissociation?

  • Release of carbon dioxide from the haemoglobin
  • Attraction of oxygen to the haemoglobin
  • Release of oxygen from the haemoglobin
  • Release of hydrogen from the haemoglobin

3. Which of the following contains plasma and neutrophils?

  • Mucus
  • Tissue fluid
  • Blood
  • Lymph

4. What would an ECG trace be used to find?

  • Whether part of the heart muscle is unhealthy
  • The blood pressure within the heart
  • The size of the heart muscle

5. Which of the following is the process in which the heart fills with blood?

  • Atria
  • Diastole
  • Atrial Systole
  • Ventricular Systole


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