Figure 2 shows a diagram of the human heart. Name the chamber labelled A.

Which of the following is a chamber of the heart?*1 pointAortaVentricleAtriumVentricle and Atrium

Describe the structure of the human heart briefly

Diagram 1 shows a section through the heart. Diagram 14. (a) Use words from the box to name the structures labelled A and B on Diagram 1.aortaatrium pulmonary artery ventricle A ___________________________________________________________ B ___________________________________________________________ (2) (b) The tissue in the wall of the heart contracts. (i) What type of tissue is this? Tick ( ) one box. muscular glandular epithelial (1) (ii) What does the heart do when this tissue contracts? ______________________________________________________________ ______________________________________________________________ (1) Page 8 of 19(c) Draw arrows on Diagram 2 to complete the route taken by deoxygenated blood through the heart. Diagram 2(2) (d) The graph shows the percentage (%) of adults in the UK who have coronary heart disease.Age group (i) Look at the graph. Which group of people is most at risk of having coronary heart disease in the UK? ______________________________________________________________ (2) Page 9 of 19(ii) Explain what happens to the heart in coronary heart disease. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ (3)

The heart chamber with the thickest walls is the

What are the upper chambers of the heart called?Multiple ChoiceatriaauriclesAV valvesventriclessepta