PRELIM LEC: INTRODUCTION IN GENERAL PATHOLOGY Flashcards
- underlying cause of death
- structural and functional changes in cell, tissue and organ
- molecular basis of disease
HISTOPATHOLOGY
Only in tertiary laboratory available (Hospitals)
HISTOPATHOLOGY
4 DIVISIONS OF PATHOLOGY
GROSS PATHOLOGY
MICROSCOPIC PATHOLOGY
ANATOMICAL PATHOLOGY
CLINICAL PATHOLOGY
- physical changes (color, weight, size of organ)
- Macroscopic examination of tissues and organs
GROSS PATHOLOGY
- microscopic changes
MICROSCOPIC PATHOLOGY
- Surgical
- Biopsy (living), Autopsy (dead)
Histopathology
ANATOMICAL PATHOLOGY
ANTE-MORTEM EXAMINATION
BIOPSY
POST-MORTEM EXAMINATION
AUTOPSY
Stages of the Cellular Response to Stress and Injurious Stimuli
- NORMAL CELL
- ADAPTION
- CELL INJURY
Normal cells handle physiologic demand through______
Homeostasis
act of maintaining a steady state
Homeostasis
When there is a slightly severe stress, or some pathologic stimuli, cells undergo _______in order to survive and continue to function.
adaptation
reversible structural and functional response of cells to stress and stimuli
adaptation
But if the limits of adaptive response are exceeded, or when cells are exposed to injurious stimuli (agents or stress), or deprived of essential nutrients, _____ occurs.
cell injury
- altered cell structure or function due to exposed to injuries stimuli (agents or stress)
- reversible or irreversible
cell injury
If the stimulus is mild and transient, the injury is ______. The cell may go back to its normal state.
reversible
If it is severe and progressive, the injury is _________. Cells that undergo irreversible injury will ultimately suffer cell death, which may be pathological or physiological.
irreversible
Pathologic cell death
necrosis (Premature cell death)
Physiologic cell death
apoptosis (Programmed cell death)
Other types of stress can induce responses other than cellular
adaptation, injury and death. The responses are the following:
- Autophagy
- Intracellular accumulation of substances
- Pathologic calcification
- Cellular aging
starved cells eat its own components during nutrient deprivation (self-eating)
Autophagy
too much substances such as proteins, lipids, hyaline, glycogen, pigments
Intracellular accumulation of substances
abnormal tissue deposition of calcium salts
Pathologic calcification
progressive decline in the life span and functional capacity of cells
Cellular aging
- Changes made by a cell in response to stress or stimuli
- May be physiologic or pathologic
CELLULAR ADAPTATION
5 CELLULAR ADAPTION
Hypertrophy
Hyperplasia
Atrophy
Metaplasia
Dysplasia
- can be physiologic
- increase of functional demand
- specific hormone stimulation
- Increased Cell Size TO Increased Organ Size
- Due to increased protein synthesis
Hypertrophy
Most common stimulus of hypertrophy:
Increased Workload
3 TYPES OF HYPERTROPHY
TRUE
FALSE
COMPENSATORY
STIMULATED BY HORMONES
TRUE HYPERTROPHY
EXCESS OF ACCUMALATION OF MOLECULES
FALSE HYPERTROPHY