Every day our body does something remarkable, but we are completely unaware of it most of the time: our immune system is constantly protecting us from pathogens in our environment as well as threats from within. This highly evolved, interdependent collection of organs, cells and chemical messengers is continually scanning our tissues for any unwanted intruders or abnormal cells. When we get ill, with a cold for example, full mobilisation of our immune system sends armies of cells and molecules to fight the problem in what can sometimes literally be a fight to the death. Fortunately for us, our immune system wins the battle almost every time!
In this module we examine the various components of the immune system – the organs, cells, and messengers, and how they function in health and illness. We look at particular threats such as allergies, infectious diseases and cancer, providing students with a good understanding of how this vital component of our bodies keeps us well.