1 Definition or basic features of the topic or medical knowledge essential for the understanding of disease
2.2 Etiology of pathologic changes or causes of disease
2.3 Basic concepts underlying pathologic processes or pathogenesis of disease, their mechanisms, and how they develop
2.4 Gross and microscopic specimens of human organs and tissues affected by disease in order to visualize the morphology of various lesions
2.5 Pathoanatomic facts that correlated with biochemical and immunologic finding, as well as with the clinical symptoms with which a specific disease presents in the living patient
physical, chemical, and biological factors. assessment and control of those environmental factors that can potentially affect health.