Bone marrow is affected as a somatic dose indicator. What type of depression results?

Bone marrow plays a crucial role in the production of blood cells, including red blood cells, white blood cells, and platelets. When bone marrow is affected by radiation exposure, it can lead to a reduction in the production of these critical blood components. This reduction manifests as hematological depression, which is characterized by issues such as anemia (due to low red blood cell counts), increased risk of infections (due to low white blood cell counts), and problems with clotting (due to low platelet counts).

The concept of somatic dose indicates that this type of biological effect is a direct result of radiation exposure to living tissues, and bone marrow is particularly sensitive to such exposure. The effects are observable in the blood count and can lead to serious health complications if the depression is significant.

The other choices refer to different systems or effects that are not directly related to bone marrow function. Neurological depression would involve the nervous system, cognitive issues pertain to mental functions, and dermatological effects involve the skin. Since bone marrow primarily impacts the hematopoietic system, the most accurate and relevant answer is hematological, as it directly relates to the depression in blood cell production.