Radiation Biology Section 4

Front

What substance produced by free radicals is deadly to cells?

Back

Hydrogen Peroxide

Front

What is the term for a chromosome aberration where the arms break off and attach to each other?

Back

Ring

Front

What is the period of acute radiation syndrome where the patient appears free from visible effects of radiation?

Back

Latent

Front

What type of radiation effects are considered deterministic?

Back

Most early effects of radiation.

Front

What is the term for ulceration and denudation of the skin?

Back

Desquamation

Front

What are free radicals?

Back

Highly reactive molecules that can damage cells and tissues.

Front

Define acute radiation syndrome (ARS).

Back

A collection of health effects that occur within 24 hours of exposure to high doses of ionizing radiation.

Front

What is the difference between deterministic and probabilistic effects of radiation?

Back

Deterministic effects have a threshold and increase in severity with dose, while probabilistic effects occur by chance and increase in probability with dose.

Front

What is the prodromal stage of acute radiation syndrome?

Back

The initial phase characterized by nausea, vomiting, and other symptoms shortly after exposure.

Front

What is the significance of the latent period in acute radiation syndrome?

Back

It is a phase where the patient may feel well, but biological damage is occurring.