1 / 25
A yellow thing made of plastic, taped to the crook of an arm. A pair of hands wearing gloves, injecting medicine into the yellow thing.
We sometimes need to put medicine, food, fluid, painkillers and anaesthetic directly into your bloodstream. To do this, we insert a thin plastic tube into a blood vessel, usually in your hand or in the crook of your arm. Mathilda, aged 14, explains exactly what happens.