Final answer:
A personal injury under the Transportation Code refers to an injury requiring treatment, such as when a blood vessel is severed causing bleeding and escape of blood components.
Step-by-step explanation:
According to the Transportation Code, an injury to any part of the human body that requires treatment is known as a personal injury. This could involve a situation where a blood vessel is severed, leading to blood and blood components, such as erythrocytes (red blood cells) and leukocytes (white blood cells), escaping from the vascular system through the site of the injury. Proper medical attention is essential to address such injuries, which may arise from various contexts including motor vehicle accidents.