Table of Contents
- 1 Which route of exposure or entry occurs when a product enters the body through the skin or eyes?
- 2 What are the different routes in the body which hazardous substance can enter?
- 3 What is the most important route of entry?
- 4 What are the three routes of entry of chemicals into the body?
- 5 What are exposure routes?
Which route of exposure or entry occurs when a product enters the body through the skin or eyes?
Absorption: Hazardous chemicals, such as vapors, mists, dust or smoke, can enter the body through the skin or eyes.
What are the different routes in the body which hazardous substance can enter?
There are four major routes by which a chemical may enter the body:
- Inhalation (breathing)
- Skin (or eye) contact.
- Swallowing (ingestion or eating)
- Injection.
During which period of pregnancy is the baby most sensitive to chemicals that cause birth defects?
The embryonic period, during which organogenesis takes place, occurs between implantation at around 14 days to around 60 days postconception. This is usually the most sensitive period to teratogenesis when exposure to a teratogenic agent has the greatest likelihood of producing a malformation.
What is an exposure pathway?
An exposure pathway refers to the way a person can come into contact with a hazardous substance. There are three basic exposure pathways: inhalation, ingestion, or direct contact. The degree or extent of exposure is determined by measuring the amount of the hazardous substance at the point of contact.
What is the most important route of entry?
There are four routes by which a substance can enter the body: inhalation, skin (or eye) absorption, ingestion, and injection. Inhalation: For most chemicals in the form of vapors, gases, mists, or particulates, inhalation is the major route of entry.
What are the three routes of entry of chemicals into the body?
Inhalation – gases and airborne particulate can be breathed in through your nose or mouth. Absorption – chemicals, including dust, smoke or vapors, can enter your body through your skin or eyes. Ingestion – chemicals can enter your body through your mouth.
What are examples of teratogens?
A teratogen is something that can cause birth defects or abnormalities in a developing embryo or fetus upon exposure. Teratogens include some medications, recreational drugs, tobacco products, chemicals, alcohol, certain infections, and in some cases, health problems such as uncontrolled diabetes in pregnant people.
What are the effects of teratogens?
Teratogens may affect the embryo or fetus in a number of ways, causing physical malformations, problems in the behavioral or emotional development of the child, and decreased intellectual quotient (IQ) in the child.
What are exposure routes?
Exposure routes are the ways an agent can enter a person (e.g., by inhalation, ingestion, or dermal uptake). Inhalation is the most rapid route of uptake, followed by dermal contact and ingestion. The health effects may vary significantly among the exposure routes.