Lecture 9-Toxicology_lecture_notes

Lecture 9-Toxicology_lecture_notes - Toxicology Definition:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Toxicology Definition: the study of poisons That are substances which cause alteration or perturbation in the function of an organism leading to harmful effects - distribution - how much the poison is toxic - the chemistry of the poison how harmful a substance is depends on the chemical properties of the substance - polarity (soluble in water and can find them in drinking water, move together with water, can be found in the water in our tissues, between our cells but cannot enter the cell wall) usually inorganic - fat soluble can enter the cell wall and accumulate in the cell wall - persistence of chemical (DDT very persistent in the environment, stays unchanged in the environment for a long time=POP) - bioaccumulation: more toxic when high bioaccumulation - biomagnification: toxicity increases in the food chain - chemical interaction o antagonistic: when one suppresses the toxicity of another (vitamins such as vitamin A and E reduced the risk bad effects of carcinogen chemicals) o synergistic: (asbestos is directly related to lung cancer but if the person is smoking as well the risk of getting lung cancer is even higher(20
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

Lecture 9-Toxicology_lecture_notes - Toxicology Definition:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online