Which type of cells are characterized by rapid reproduction and short lifespan?

Radiosensitive cells are those that are characterized by rapid reproduction and a short lifespan. These cells are often found in tissues that undergo frequent regeneration, such as bone marrow, skin, and the lining of the gastrointestinal tract. Their high rate of division makes them more susceptible to damage from radiation, as radiation primarily affects cells during mitosis.

In contrast, radioresistant cells tend to have a slower rate of division and a longer lifespan, making them less vulnerable to radiation effects. Oncogenic cells, while potentially rapid in growth, typically refer to cancer cells that have undergone mutations leading to uncontrolled division but do not specifically relate to the general characteristics of cell longevity or sensitivity to radiation. Specialized cells are typically differentiated to perform specific functions in the body and often have longer lifespans with slower division rates. Therefore, the defining features of rapid reproduction and short lifespan align most accurately with radiosensitive cells.