Skip to content

Course home

Question bank·8.2 Blood and circulation
Sign up

8.2 Blood and circulation

EasyMediumHard
123456789101112131415161718192021
Question 3

A student investigates a prepared heart specimen. The four chambers are labelled A, B, C and D.

InvestigationResult
Water is added through the pulmonary veinThe water passes through chamber A, then chamber B, and leaves through the aorta
Water is added through the vena cavaThe water passes through chamber C, then chamber D, and leaves through the pulmonary artery
Water is gently pushed from chamber B towards chamber AA flap closes and no water enters chamber A
The walls of the lower chambers are measuredChamber B: 14 mm thick; chamber D: 5 mm thick

Explain how the results identify chambers A, B, C and D and show how the heart is adapted for its function.

In your answer:

  • identify each labelled chamber using the route taken by the water
  • explain the result of the test involving the flap
  • explain the difference between the wall thicknesses of chambers B and D
[6]
Markscheme

8.2 Blood and circulation Questions

  1. GCSE
  2. /Biology
  3. /8.2 Blood and circulation

67 exam-style questions on Edexcel GCSE Biology 8.2 Blood and circulation, covering 8.2.1 Structure and function of the blood, 8.2.2 Structure of blood vessels, 8.2.3 Structure of the heart and circulatory system, and 8.2.4 Cardiac output. Each one has a worked solution and a mark scheme showing where the marks go.

More questions