Notes

UNIT 1
CONCEPTS OF HEALTH AND DISEASE
Mrs. Sora
-soreness/ backpain a tingling and burning feeling left side lower posterior back
-daughter concerned of loss of hearing/ vision
-pneumonia 4 months ago
-normal vital signs (BP = 122/68mm Hg, Pulse = 77 R.R. = 14/minute, Temp 98.8F)
-Rash over T7 left side diagnosed with varicella-zoster virus

TERM
Pathophysiology- the physiology of altered health. combing the words pathology and physiology, pathos in Greek meaning disease, deals with the study of the structural and functional changes in cells, tissues, and organs of the body. Physiology deals with the function of the human body. Thus, pathophysiology deals not only with the cellular and organ changes that occur with disease but with the effects that changes have on total body functions.
-Pathophysiology also focuses on the mechanisms of the underlying disease and provides information to assist with panning preventative as well as therapeutic health care measures and practices such as following a healthy diet, exercising and being compliant with prescribed medications.

HEALTH
-The U.S. Department of Health and Human services describes health as
1) Attain lives free of preventable disease, disability, injury, and premature death.
2)Achieve health equity and eliminate disparities.
3)Promote good health for all.
4)Promote healthy behaviors across the life span.
DISEASE
-A disease is considered an acute or chronic illness that one acquires or is born with that causes physiological dysfunction in one or more body systems. Each disease generally has specific signs and symptoms that characterize its pathology and identifiable etiology.
ETIOLOGY
-The causes of disease are known as etiological factors, Among the recognized etiological agents and biological agents (bacteria, viruses), physical forces (trauma, burns, radiation), chemical agents (poisons, alcohol), One genetic inheritance, and nutritional excesses or deficits.
PATHOGENISIS
-While etiology describes what sets the disease process in motion, pathogenesis explains how the disease process evolves. In other words, pathogenesis is the sequence of cellular and tissue events that take place from the time of initial contact with an etiological agent until the ultimate expression of a disease.
MORPHOLOGY AND HISTOLOGY
-Morphology refers to the fundamental structure or form of cells or tissues, Morphological changes are concerned with both the gross anatomic and microscopic changes that are characteristic of a disease. Histology deals with the study of the cells and extra cellular matrix of body tissues. A lesion represents a pathological or traumatic discontinuity of a body organ or tissue.

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