Biology A (Salters Nuffield) Advanced Subsidiary PAPER 1: Lifestyle, Transport, Genes and Health.. Edexcel Level 3 GCE. Rated A+

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Answer ALL questions. Write your answers in the spaces provided. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then... mark your new answer with a cross . 1 The diagram shows the internal structure of a human heart. (a) (i) Draw arrows to show the route blood would take as it returns from the body, enters the heart and is then pumped to the lungs. (2) (ii) State which stage of the cardiac cycle is shown in the diagram. (1) ..................................................................................................................................................................................................................................................................................... (b) Name the valves in this heart. (2) ..................................................................................................................................................................................................................................................................................... ..................................................................................................................................................................................................................................................................................... (Total for Question 1 = 5 marks) 2 The diagram shows a blood vessel of a person with cardiovascular disease (CVD). R Q P T plaque S X Y © Universal Images Group North America LLC/Alamy Stock Photo (a) (i) Name the type of blood vessel shown in this diagram. (1) ..................................................................................................................................................................................................................................................................................... (ii) Which labelled part of the blood vessel contains tissue that can contract to maintain blood pressure? (1) A P B Q C S D T [Show More]

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