Which exposure route primarily involves absorption through permeable tissue such as skin and eyes?

Which exposure route primarily involves absorption through permeable tissue such as skin and eyes?

• A. Absorption route
• B. Ingestion route
• C. Injection route
• D. Inhalation route

Answer: (A)

The main idea is that some chemicals enter the body by passing through permeable surfaces like the skin and the eyes. This is the absorption route, where contact with the skin or eye surfaces allows the substance to diffuse into the body and potentially reach the bloodstream. Skin and mucous membranes can absorb many chemicals, especially if the exposure is prolonged, the chemical is lipophilic, or the skin barrier is damaged. This route can cause local irritation at the contact site or systemic effects once the chemical gets into circulation. By comparison, ingestion involves swallowing a substance into the digestive system, inhalation is breathing it into the lungs, and injection requires piercing the skin to introduce the substance directly into the body. So, absorption through skin and eyes is the route best described by permeable tissue entering the body.

The main idea is that some chemicals enter the body by passing through permeable surfaces like the skin and the eyes. This is the absorption route, where contact with the skin or eye surfaces allows the substance to diffuse into the body and potentially reach the bloodstream. Skin and mucous membranes can absorb many chemicals, especially if the exposure is prolonged, the chemical is lipophilic, or the skin barrier is damaged. This route can cause local irritation at the contact site or systemic effects once the chemical gets into circulation. By comparison, ingestion involves swallowing a substance into the digestive system, inhalation is breathing it into the lungs, and injection requires piercing the skin to introduce the substance directly into the body. So, absorption through skin and eyes is the route best described by permeable tissue entering the body.