Rad Bio Section 3

Front

Describe the effects on the severity or probability of a response with a linear non-threshold dose response relationship as dose increases.

Back

As dose increases, there is no change in severity, but the probability of a response increases.

Front

What does a low D37 number indicate about a cell's radiosensitivity?

Back

A low D37 number means that a cell is radiosensitive.

Front

What is the radiosensitive target molecule in cells?

Back

The radiosensitive target molecule is DNA.

Front

Identify the least radiosensitive cell in the human body.

Back

The least radiosensitive cell in the human body is the nerve cell.

Front

What type of tissue covers and lines the surfaces of the body?

Back

The tissue type that covers and lines the surfaces of the body is epithelial tissue.

Front

What is the definition of a linear non-threshold dose response relationship?

Back

A linear non-threshold dose response relationship indicates that any amount of radiation exposure can increase the probability of a response without a safe threshold.

Front

Explain the concept of radiosensitivity.

Back

Radiosensitivity refers to the susceptibility of cells, tissues, or organisms to the harmful effects of radiation.

Front

What factors can influence a cell's radiosensitivity?

Back

Factors influencing radiosensitivity include the cell cycle phase, oxygenation, and the type of tissue.

Front

What is the significance of the D37 value in radiobiology?

Back

The D37 value is the dose of radiation that reduces the survival of a population of cells to 37%.

Front

How does the type of radiation affect cellular damage?

Back

Different types of radiation (e.g., alpha, beta, gamma) have varying abilities to penetrate tissues and cause cellular damage.