IGCSE Biology - The Lungs, Gas Exchange and Smoking Presentation
This is an animated PowerPoint presentation that covers Section 2.1 Breathing and Gas Exchange of the Edexcel IGCSE Biology course.
The PowerPoint covers the following questions:
Can you label a diagram of the thorax, including the ribs, intercostal muscles, diaphragm, trachea, bronchi, bronchioles, alveoli and pleural membranes? Can you explain how the intercostal muscles and the diaphragm are used in ventilation? How is diffusion involved with gas exchange? Can you explain how alveoli are adapted for gas exchange? What kind of experiment could you do to investigate the effect of exercise on breathing rate in humans? How does smoking effect the gas exchange system and circulatory system?
The PowerPoint is designed to directly address each relevant point in the syllabus. It is simple and straight to the point covering the topic in just the right amount of detail.
Many of the slides have animations in that will only work when viewed in slideshow mode, so please use that when working through the presentation.