How We Smell

Introduction to the structure and function of the nose, and how it works in tandem with the brain. How do we tell the difference between good and bad smells, and has this ability helped humans to survive? Biology - Being Human - Learning Points. All smells are simply molecules floating in the air around us. At the back of the nasal cavity are specialised receptor cells known as olfactory cells. The olfactory nerve is connected to two different parts of the brain. The frontal lobe identifies a smell, while the limbic system connects smells to particular memories. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.