Exam-style Questions: Heart and Circulation

  1. Fill in the missing words...

    Blood fills the atria and the ___(i)___ and ___(ii)___ valves are closed. The atria gently ___(iii) and push their blood into the two ___(iv)___ nbsp;. These then start to contract, which closes the atrial valves and pushes the blood out through the___(v)___ valves into the ___(vi)___ artery and the ___(vii)___ .

    (Marks available: 7)

    Answer

    Answer outline and marking scheme for question: 1

    (i) bicuspid / tricuspid

    (ii) tricuspid / bicuspid

    (iii) contract

    (iv) ventricles

    (v) semi-lunar

    (vi) pulmonary

    (vii) aorta

    (Total = 7 marks)

  2. What is the function of the hepatic portal vein?

    (Marks available: 2)

    Answer

    Answer outline and marking scheme for question: 2

    It carries blood to the liver.

    Then the blood can leave the liver for the heart.

    The hepatic portal system stops the blood system getting clogged up.

    (Total = 2 marks)

  3. Name 4 of the substances found in plasma.

    (Marks available: 4)

    Answer

    Answer outline and marking scheme for question: 3

    Any 4 of the following:

    • water
    • carbon dioxide
    • antitoxins
    • glucose
    • urea
    • amino acids
    • antibodies
    • hormones

    (Total = 4 marks)