Routes of Exposure to Hazardous Materials Quiz

Which route of exposure is the most common for a chemical to enter the body?

Inhalation

What types of chemicals could be inhaled as mentioned in the text?

Solid chemicals in the form of particles, fibers, and dusts

Which route of exposure could cause systemic effects by absorbing chemicals through the skin and/or eyes?

Direct skin/eye contact

What factors influence direct contact effects and absorption of chemicals through the skin?

Chemical concentration Signup and view all the answers

What is mentioned as a less common route of entry for chemicals into the body?

Ingestion Signup and view all the answers

How can persons using chemicals easily ingest chemicals into the body as per the text?

Contaminated hands not washed prior to eating or drinking Signup and view all the answers

What is the LD50?

The dose that kills half (50%) of the animals tested Signup and view all the answers

What is the relationship between dose and response?

The greater the dose, the greater the response Signup and view all the answers

What is meant by 'synergistic effects'?

When one chemical exposure is more hazardous than expected Signup and view all the answers

Why is duration and frequency important in chemical exposure?

It can make one-time exposures of less concern than multiple exposures Signup and view all the answers

What does the LD stand for in LD50?

Lethal Dose Signup and view all the answers

What is the most significant factor of concern with chemical exposure according to the text?

Dose Signup and view all the answers

What is a possible hazard when exposed to two or more chemicals at the same time?

'The combined exposures are more hazardous than what one might expect from simply adding the two effects together' Signup and view all the answers

'Each person is unique.' What does this imply regarding responses to chemical exposures?

'Responses may vary dramatically among individuals' Signup and view all the answers

'An exposure to a large amount of the chemical is usually of more concern than exposure to a small amount.' Why is this so?

'Exposure to large amounts of less toxic chemicals is a greater danger' Signup and view all the answers

'Any biological effect caused by the exposure is called the RESPONSE.' What is not always true about this relationship?

'There is no relationship between dose and response' Signup and view all the answers