Complex sentence: He lost his left eyelid, the bridge of his nose, the roof of his mouth and most of his teeth, the accident had essentially scraped off half his face, and ambulance attendant had thrown away pieces of his nasal cartilage.
Split into simpler sentences: He lost his left eyelid, the bridge of his nose, the roof of his mouth and most of his teeth. In addition to the accident essentially scraping off half his face, the ambulance attendant had thrown away pieces of his nasal cartilage.