Which factor is not a primary consideration in animal physiology?

The genetic history of individual species, while important in the broader context of biology and evolution, is not typically considered a primary factor in animal physiology. Animal physiology focuses primarily on understanding how the functions of an organism's structures operate in various conditions, the biochemical processes that sustain life, and how environmental factors influence behavior and physiological responses.

The relationship of structure to function is fundamental as it examines how anatomical features contribute to physiological capabilities, illustrating principles like biomechanical efficiency. The role of chemical reactions in tissue function is crucial because metabolic pathways and biochemical processes are central to maintaining homeostasis and overall organismal health. Environmental factors affecting behavior are also significant in physiology as they can drive adaptive changes and influence physiological responses, aligning with the concept of functional ecology. Thus, while genetic history plays a role in evolutionary biology, it is not a direct consideration in the physiological mechanisms and adaptations of living organisms.