Explore the intricate structures and functions of the human body, from cells to organ systems.
Knowing basic first aid helps you respond quickly when someone is hurt. Simple actions, like cleaning a cut or applying a bandage, use your knowledge of the body's healing powers.
First aid can prevent infections and help wounds heal faster, using your understanding of skin cells and the immune system.
Using a bandage and pressure to stop bleeding from a scraped knee.
Applying ice to reduce swelling after a sprain.