Physiological Adaptation is a category in the NCLEX-PN test that assesses the nurse's understanding of physiological responses to illness, injury, and stress. This category assesses the practical nurse's understanding of the principles of pathophysiology and physiological adaptation, which are critical for providing patient-centered care and promoting positive patient outcomes. The NCLEX-PN test assesses the nurse's ability to understand and manage physiological adaptations, which is an important aspect of entry-level practical nursing practice.