CHAPTER 1 Flashcards
any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury
Disease
The study of disease is called ?
pathology
Pathology - it involves the determination of the cause (_____) of the disease.
Etiology
It is the understanding of the mechanisms of its development ____
Pathogenesis
it involves the determination of the cause (etiology) of the disease, the understanding of the mechanisms of its development (pathogenesis), the structural changes associated with the disease process (morphological changes), and the functional consequences of those changes
Pathology
The normal state of an organism represents a condition of delicate physiological balance ____
homeostasis
____ is defined as a self-regulating process by which a living organism can maintain internal stability while adjusting to changing external conditions
Homeostasis
What are the classification of diseases?
• Infectious diseases,
• Non infectious diseases
• According to Etiology
• According to contagiousness or transmissibility to:
• According to Course of the disease to
• According to pattern of occurrence
What are the Classification of diseases according to etiology?
> Viral, ASF, Rabies, CRD, FMD
bacterial & fungal , Tetanus, Leptospirosis, Anthrax. T.B
parasitic diseases,
Multifactorial
It is a group of diseases resulting from invasion of the animal body by infectious biological or pathogenic agents as bacteria, virus, yeast and fungi.
Infectious diseases
Is that disease resulting from environmental condition, as
• bad ventilation or faults in animal housing or
• mechanical, physical or chemical agents,
• metabolic disorder and nutritional deficiency.
Non infectious diseases
A diseases in which occur transmission of causative agent or its products from reservoirs to susceptible host by direct and indirect transmission.
Contagious disease
It’s directly as by direct contact or by droplet infection. Indirectly through an intermediate plant or animal
host, vectors or inanimate materials.
Contagious disease
Give an example of contagious diseases
foot & mouth disease, cattle plaque
Infectious diseases in which occur transfer of infectious agent and its product from reservoir into susceptible host by indirect methods
Non contagious disease