Animal Anatomy and Physiology 1 Practice Exam

Yellow bone marrow has the capacity to revert to red bone marrow under certain conditions. This biological adaptability is a vital part of the body's response to increased demands for blood cell production, such as during times of significant blood loss or anemia.

Yellow bone marrow primarily consists of adipose (fat) tissue and serves as an energy reserve. However, in situations where the body requires more red blood cells, such as in response to chronic hypoxia or intense physical demand, the adipocytes in yellow marrow can be transformed into hematopoietic (blood-forming) cells, thus converting the yellow marrow back to red marrow.

This ability to switch enables the bone marrow to regulate blood cell production efficiently in line with the body's needs. Thus, the correct response to the question regarding the reversion of yellow bone marrow to red marrow is affirmative, reflecting the dynamic nature of marrow tissue and its role in maintaining physiological balance.