Human heart (WJEC A-level Biology)

This lesson describes the structure and function of the human heart and names the blood vessels associated with this organ . The PowerPoint and accompanying resources are part of the first lesson in a series of 2 lessons that have been designed to cover point (b) in topic 3 of AS unit 2 of the WJEC A-level Biology specification

As this topic was covered at GCSE, the lesson has been planned to build on this prior knowledge whilst adding the key details which will enable students to provide A-level standard answers. The primary focus is the identification of the different structures of the heart but it also challenges their ability to recognise the important relationship to function. For example, time is taken to ensure that students can explain why the atrial walls are thinner than the ventricular walls and why the right ventricle has a thinner wall than the left ventricle. Opportunities are taken throughout the lesson to link this topic to the others found in topic 3 including those which have already been covered like circulatory systems as well as those which are upcoming such as the initiation of heart action. There is also an application question where students have to explain why a hole in the ventricular septum would need to be repaired if it doesn’t naturally close over time.