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2.2 Animal tissues, organs and organ systems

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Question 37
F

Valves are found between the atria and the ventricles and at the exits of the ventricles. What is the function of these valves?

[1]
A

They control the rate at which the muscle of the heart contracts

B

They keep oxygenated and deoxygenated blood from mixing together

C

They increase the pressure of the blood as it leaves the ventricles

D

They stop blood from flowing backwards through the heart

Markscheme

2.2 Animal tissues, organs and organ systems Questions

  1. GCSE
  2. /Biology
  3. /2.2 Animal tissues, organs and organ systems

179 exam-style questions on AQA GCSE Biology 2.2 Animal tissues, organs and organ systems, covering 2.2.1 The human digestive system, 2.2.2 The heart and blood vessels, 2.2.3 Blood, 2.2.4 Coronary heart disease: a non-communicable disease, 2.2.5 Health issues, 2.2.6 The effect of lifestyle on some non-communicable diseases, and 2.2.7 Cancer. Each one has a worked solution and a mark scheme showing where the marks go.

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