Final answer:
The most common and rapid route of exposure to chemicals is through skin contact, which can cause damage to the skin or absorption into the bloodstream. Once chemicals enter the body through the skin, they can reach internal organs.
Step-by-step explanation:
The most common and rapid route of exposure to chemicals is through skin contact. When chemicals come into contact with the skin, they can damage it or be absorbed into the bloodstream. For example, certain household products contain corrosive agents that can cause chemical poisoning through ingestion or skin contact.
Once chemicals enter the body through the skin, some can move into the bloodstream and reach internal organs such as the lungs, liver, kidneys, or nervous system.