Available Answers

1. 1.

   Arrows A, B, C and D show the flow of blood in the human body.

   1. Name the organ X:          __________
   2. Name the organ Y:          __________
   3. Which arrows represent:
      Oxygen-rich blood?         __________
      Carbon-dioxide rich blood? __________

   

2. 2.

   Multiple choice questions (MCQs)

   1. What materials are carried by blood?
      1. Nutrients
      2. Oxygen
      3. Carbon dioxide
      4. All of these
   2. The thinnest blood vessels in the human body are
      1. Arteries
      2. Veins
      3. Capillaries
      4. Can be any of these
   3. When you feel your pulse, what you actually feel is blood rushing through the
      1. Arteries
      2. Veins
      3. Capillaries
      4. All of these
   4. In which blood vessels does exchange of gases oxygen and carbon dioxide occur?
      1. Arteries
      2. Veins
      3. Capillaries
      4. All of these
3. 3.

   Match the columns.

   Column A	Column B
   a. Nutrients can pass through their walls	(i) Veins
   b. They take blood away from the heart	(ii) Ventricles
   c. They take the blood towards the heart	(iii) Pulse
   d. The two chambers in the heart that pump blood	(iv) Capillaries
   e. Throbbing in the wrist	(v) Arteries

    

4. 4.

   Fill the missing words in the picture.

   

5. 5.

   What is an organ system?
6. 6.

   What are the functions of the circulatory system?