Exam 13: Forensic Toxicology

Alcohol is oxidized in the body primarily in:

Explain the DRE program.

Alcohol that is not oxidized is expelled ________ in breath, perspiration, and urine.

The rate of alcohol absorption on a full stomach is ________ the rate of absorption on an empty stomach.

The concentration of a drug present in urine is a poor indicator of how extensively an individual's behavior or state is influenced by the drug.

Alcohol is eliminated from the body chemically unchanged in:

An airtight container best ensures the preservation of blood samples.

Failure to keep the blood refrigerated or to add a preservative may result in a substantial decline in alcohol concentration.

When collecting postmortem blood samples for alcohol determination, why is it best to collect a number of blood samples from different body sites?

Name and describe two divided-attention tasks administered during a field sobriety text.

A substance with a pH of 8 is likely to be:

A ________ is an individual whose job is to detect and identify drugs and poisons in body fluids, tissues, and organs.

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)Small sacs in the lungs through whose walls air and other vapors are exchanged between the breath and the blood B)Substance that stops the growth of microorganisms in blood C)A blood vessel that carries blood away from the heart D)A compound capable of accepting a hydrogen ion (H+) E)An individual charged with the responsibility of detecting and identifying the presence of drugs and poisons in body fluids, tissues, and organs F)A compound capable of donating a hydrogen ion (H+)to another compound G)A blood vessel that transports blood toward the heart H)A symbol used to express the basicity or acidity of a substance. A value of 7 is neutral; lower values are acidic; higher values basic. I)Elimination of alcohol from the body in an unchanged state; typically in breath and urine J)The combination of oxygen with other substances to produce new products K)A tiny blood vessel that receives blood from arteries and carries it to veins and across whose walls exchange of materials between the blood and the tissues takes place L)The transformation of a chemical in the body to other chemicals for the purpose of facilitating its elimination from the body M)A substance that prevents the of clotting of the blood N)A detector in which a chemical reaction involving alcohol produces electricity O)The passage of alcohol across the wall of the stomach and small intestine into the bloodstream -Toxicologist

A(n)________ detector is a device attached to a breath tester to ensure that the breath sample being measured is alveolar or deep-lung breath.

Breath testing is based on the observation that there is a fixed ratio between the concentration of alcohol in alveolar breath and the concentration of alcohol in the ________.

Liquid chromatography is the most widely used approach for determining alcohol levels in blood.

The amount of alcohol absorbed through the stomach walls is ________ the amount of alcohol absorbed through the walls of the small intestine.

The most widespread method for rapidly determining alcohol intoxication is breath testing.

Which of the following is NOT classified as a heavy metal?

________ is the transformation of a chemical in the body to other chemicals to facilitate its elimination from the body.