(a)[2]
Explain why the walls of the ventricles are thicker than those of the atria.
(b)[4]
Complete Table 6.1 by identifying the heart structure responsible for each function shown.
Biology 9700 · AS & A Level · The heart
The heart — practice question
The mammalian heart has four chambers.
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This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The ventricles pump blood farther, into the pulmonary and systemic circulations.” …
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