Pima JTED Dental Assisting Practice Test 2025 - Free Dental Assisting Practice Questions and Study Guide

Radiosensitive cells are defined as those that are significantly affected by radiation exposure. This sensitivity stems from their high rate of proliferation and mitotic activity, making them more vulnerable to the damaging effects of ionizing radiation. In particular, rapidly dividing cells, such as those found in the bone marrow, lymphatic tissue, and reproductive organs, are classified as radiosensitive because radiation can disrupt their ability to replicate and function properly.

While some cells may be able to repair damage caused by radiation, the definition of radiosensitivity focuses primarily on the cells' susceptibility to radiation rather than their repair capabilities. Therefore, the term specifically describes how radiation impacts the cell's structure and function, emphasizing the detrimental effects that can occur when these cells are exposed to radiation.

In contrast, the other answer choices describe various attributes unrelated to radiosensitivity. Cells resistant to radiation, those that do not absorb radiation, and cells that can repair radiation damage do not encompass the concept of radiosensitivity, which highlights the adverse impacts of radiation on cell integrity and functionality.