Intro and Self-injury

Question 1

What is disease?

Answer 1

The disturbance of structure and function of the host’s tissues.

Question 2

What is clinical and subclinial?

Answer 2

Clinical: Able to be seen by examination (producing clinical signs. The expression of a series of pathological processes)
Subclinical: Not able to be seen by examination (no visible effect on the host but can be detected by lab tests)

Question 3

What are the three terms for disease?

Answer 3

aetiological agent
pathogen
agent of disease

Question 4

What causes agents of disease?

Answer 4

• infectious agents (living organisms)
  - not necessarily contagious
• physical
• toxins and deficiencies
• inherited disorders
• idiopathic

Question 5

Do pathogens always cause disease?

Answer 5

depends on relationship between host, agent and environment

*exposure does not equal disease

Question 6

What is pathogenesis?

Answer 6

the development of disease

Question 7

What is pathology?

Answer 7

• the structural and functional manifestations of disease
• study of disease

Question 8

What is disease?

Answer 8

abnormality of structure or function of a tissue

Question 9

What is pathophysiology?

Answer 9

the physiology of disordered function`

Question 10

What are the 5 pathological processes?

Answer 10

1. degeneration and necrosis (cell injury)
2. inflammation and repair and immunology
3. circulatory disturbances
4. disorders of growth
5. Tissue deposits and pigments

*can occur together or as a chain of events to manifest disease

Question 11

What are the causes of cell injury?

Answer 11

1. Hypoxia
2. Physical agents
3. Chemical agents
4. Genetic factors
5. Infectious agents
6. Inflammation