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2.2 Animal tissues, organs and organ systems

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Question 86
F

The heart is made of cardiac muscle, which contracts and relaxes continuously throughout a person's life.

a.

Name the blood vessels that supply the cardiac muscle with blood.

[1]
b.

Explain why the cardiac muscle needs its own supply of blood.

[3]
c.

The coronary arteries of an older person deliver less blood to the cardiac muscle than normal. Suggest why this person becomes breathless when climbing stairs.

[2]
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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