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Biologia : Sistema Circulatório



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1.

Which of these does not cause an increase in pulse rate?

  Exercise

  Sleep

  Anxiety

  Fever

Dica      

2.

Identify the blood vessel ‘D’ in this diagram.
heart

  Pulmonary Trunk

  Inferior vena cava

  Aorta

  Superior vena cava

3.

Identify the blood vessel ‘A’ in this diagram.
heart

  Pulmonary artery

  Carotid artery

  Inferior vena cava

  Aorta

4.

Which of these is not a feature of veins?

  They return blood from the various parts of the body to the heart.

  They contain valves.

  They are thin-walled.

  All veins carry deoxygenated blood.

Dica      

5.

Very fine vessels called capillaries connect arteries and veins to each other.

  False

  True


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