Unit 2 B1: Location and anatomy of blood vessels (Pearson BTEC S & ES)

This detailed lesson describes how the anatomy and location of the arteries, arterioles, capillaries, venules and veins enables them to perform their functions. The engaging PowerPoint and accompanying resource have both been designed to cover the 2nd part of point B1 in UNIT 2 of the Pearson BTEC Level 3 National Diploma in Sport and Exercise Science specification.

The aorta, vena cava, pulmonary artery and pulmonary vein were covered in the previous lesson on the function and anatomy of the heart so this lesson focuses on the location and anatomy of the 5 different types of blood vessels. Students will have met arteries, veins and capillaries at GCSE so this lesson builds on that knowledge whilst introducing the arterioles and venules. Time is taken to look at the structure of the artery and specifically at how the narrow lumen and thick wall allows this blood vessel to maintain the high pressure of blood and also withstand it. The importance of the arterioles for decreasing this pressure is explained and then students will discuss how the location of capillaries next to tissues allows for a fast rate of diffusion. The rest of the lesson describes how venules connect capillaries to a vein and the structure of this final blood vessel is compared against arteries, where students have to explain why it has a wider lumen with valves and a thinner wall.

A series of quiz rounds are used to maintain engagement whilst introducing key terms and values.