This fully-resourced lesson explores the relationship between the structure of arteries, arterioles and veins and their respective functions. The engaging and detailed PowerPoint and accompanying resources have been designed to cover the 6th part of point 3.4.1 of the AQA A-level Biology specification which states that students should be able to describe the structure of these blood vessels in relation to their function.
This lesson has been written to build on any prior knowledge from GCSE or earlier in this topic to enable students to fully understand why a particular type of blood vessel has particular features. Students will be able to make the connection between the narrow lumen and elastic tissue in the walls of arteries and the need to maintain the high pressure of the blood. A quick version of the GUESS WHO game is used to introduce smooth muscle and collagen in the tunica media and externa and again the reason for their presence is explored and explained. Moving forwards, the importance of the arterioles as a transition between the artery and capillary is discussed and students will see how the smooth muscle in the walls of this blood vessel allows for the redistribution of blood during exercise. The final part of the lesson considers the structure of the veins and students are challenged to explain how the differences to those observed in arteries is due to the lower blood pressure found in these vessels.
It is estimated that it will take about 2 hours of allocated A-level Biology teaching time to cover the detail included in this lesson
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Some very useful parts. Smooth muscle, in general and in blood vessels, is not myogenic - only a very specific type of smooth muscle.
Thanks for sharing thjis. I found bits of it very useful
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