Cellular responses to stress and noxious stimuli:
Normal cells handle normal physiologic demands, maintaining a steady state called homeostasis.
More severe physiologic stresses and some pathologic stimuli may bring about a number of physiologic and
morphologic cellular adaptations, during which new but altered steady states are achieved, preserving the viability of the cell.
The adaptive response may consist of an increase in the number of cells, called hyperplasia, increase in the
sizes of individual cells, called hypertrophy.
Conversely, Atrophy is an adaptive response in which there is a decrease in the size and function of cells.
Nature of the stimulus and Cell response/adaptation towards it
- Increased demand = Hyperplasia and hypertrophy
- Decreased nutrients and stimuli = Atrophy
- Chronic irritation = Metaplasia
- Reduced oxygen supply, chemical and microbial injury = Acute reversible injury
- Progressive damage including the DNA = Necrosis and Apoptosis
- Metabolic alterations = Intercellular accumulations and calcification
Subscribe to:
Post Comments (Atom)
See All Posts / Archives:
-
▼
2020
(404)
-
▼
June
(55)
- Transposition of Teeth
- Average Leeway Space
- Ugly duckling stage
- Canine placement
- ANB Angle Cephalogram
- Frankfort's horizontal plane
- Prolonged retention of primary tooth
- Diagnosis in Orthodontics
- Bacteria found in two days old plaque is:
- Storiform pattern of fibrous tissue
- Oral Drive Theory
- Gonial angle at birth
- Development of Maxilla
- Father of Modern Orthodontics
- Pseudoepitheliomatous hyperplasia
- High rate of Cancer
- Elephantiasis neuromatosa
- Flush Terminal Plane
- Cephalocaudal gradient of Growth
- Primary displacement vs Secondary displacement
- Histopathological feature of basal cell carcinoma
- Granularity of oncocytes
- Sturge Weber Syndrome
- Most common site of Oral Leukoplakia
- Standard airway for Ludwig's Angina
- Trotter's Triad
- Nasopharyngeal carcinoma virus
- Punched out edge of ulcer
- Cellular response to Stress and Noxious Stimuli
- Mechanism of plasma membrane damage in ischemia
- Most reactive free radical
- Folic acid deficiency
- Fracture of the tooth bearing segment
- Largest organ in the human body
- Bisecting angle technique
- Pathognomic sign of mandibular fracture
- Fracture of Mandible treatment
- Gowgates technique Landmarks
- Long duration of anesthesia
- Muscle pierced while giving IANB
- Non rigid Connectors, Fixed Partial Dentures
- Gingival finish line on tipped molar
- Egg shaped Pontic
- Minimum amount of Taper
- CPC Line
- Palatopharyngeal Incompetence
- Over Dentures in Prosthodontics
- Serum alkaline phosphate
- Periapical granuloma vs Periapical cemental Dysplasia
- Diabetes mellitus symptoms
- Theories of Local Anesthesia
- Cementoblastoma
- Oral Submucous Fibrosis
- Fovea Palatine
- Gillies Temporal approach
-
▼
June
(55)

No comments:
Post a Comment
Add Your Comments or Feedback Here