Abnormalities in Cell Growth & Somatic Death Flashcards
3 categories for Abnormalities in Cell growth
- Retrogressive
- Progressive
- Degenerative
categories for Abnormalities in Cell growth:
The organs or a part of the tissue is smaller than normal
Retrogressive
types of Progressive abnormalities
Hypertrophy
Hyperplasia
categories for Abnormalities in Cell growth:
There is change due to aberations of cellular growth patterns
Degenerative
Incomplete development of the organ
Aplasia
Failure of an organ to develop fully
Hypoplasia
Complete non-appearance of an organ
Agenesia
Failure of an organ to form an opening
Atresia
Acquired decrease of the size of a normally developed organ
Atrophy
The tissue has an increase in size due to increase in size of individual cells
Hypertrophy
The tissue has an increase in the number of cells
Hyperplasia
4 categories of Degenerative abnormalities
Dysplasia
Metaplasia
Anaplasia
Neoplasia
Degenerative abnormalities:
Presence of abnormal cells within a tissue (reversible)
Dysplasia
Degenerative abnormalities:
Involves transformation of one type of adult cell to another (reversible)
Metaplasia
Degenerative abnormalities:
Lack of differentiation of cells (irreversible)
Anaplasia
Degenerative abnormalities:
uncontrolled proliferation of cells with no purpose
Neoplasia
Mass of neoplasmic cells
Tumor / Neoplasm
Parts of tumor
Parenchyma
Stroma
Part of tumor:
the connective framework with the lymphatic or vascular channels
Stroma
2 Classifications of Tumor
Benign
Malignant
Classification of Tumor:
Non cancerous
Benign
Classifications of Tumor:
Cancerous
Malignant
Classifications of Tumor:
Usually does not cause death
Benign
Classifications of Tumor:
Usually causes death
Malignant
Classifications of Tumor:
- Progressive and slow
- May come to a standstill or may regress
Benign
Classifications of Tumor:
Erratic (may be slow or rapid)
Malignant
Classifications of Tumor:
Absence of Metastasis
Benign
Classifications of Tumor:
Frequent Metastasis
Malignant
Grading of Tumors:
Tumor cells resemble normal cells
Well-differentiated
Grading of tumors:
Tumor cells do not resemble normal cells
Undifferentiated
Border’s Classification of Tumor:
Differentiated cells are 100% - 75%
Grade I
Border’s Classification of Tumor:
Undifferentiated cells are 0% - 25%
Grade I
Border’s Classification of Tumor:
Differentiated cells are 75% - 50%
Grade II
Border’s Classification of Tumor:
Undifferentiated cells are 25% - 50%
Grade II
Border’s Classification of Tumor:
Differentiated cells are 50% - 25%
Grade III
Border’s Classification of Tumor:
Undifferentiated cells are 50% - 75%
Grade III
Border’s Classification of Tumor:
Differentiated cells are 25% - 0%
Grade IV
Border’s Classification of Tumor:
Undifferentiated cells are 75% - 100%
Grade IV
Types of Primary Changes in Somatic Death
Circulatory Failure
Respiratory Failure
CNS Failure
Primary Change in Somatic Death:
- Cardiac function ceases
- Flat electrocardiogram
- Absence of heartbeat
Circulatory Failure
Primary Change in Somatic Death:
- Decreased O2 and Increased CO2
- Absence of respiratory sounds and movements
Respiratory Failure
Primary Change in Somatic Death:
- Loss of coordination and reflexes
- Absence of stem reflex
- Absence of electroencephalogram activity
CNS Failure
Types of Secondary Changes in Somatic Death
Algor Mortis
Rigor Mortis
Livor Mortis
Secondary Change in Somatic Death:
- First demonstrable change observed in a dead body
- Body temperature decreases by 7°F per hour
Algor Mortis
Secondary Change in Somatic Death:
- Rigidity or stiffening of muscles due to lack of ATP
Rigor Mortis
Secondary Change in Somatic Death:
- Purplish discoloration of skin due to blood stasis
- Due to stoppage of blood circulation
Livor Mortis
Bruises before death
Ecchymosis
Livor Mortis vs Ecchymosis:
Post-mortem stasis of blood
Livor Mortis
Livor Mortis vs Ecchymosis:
Trauma
Ecchymosis
Livor Mortis vs Ecchymosis:
Discoloration disappears when pressure is applied
Livor Mortis
Livor Mortis vs Ecchymosis:
No disappearance of color when pressure is applied
Ecchymosis
Livor Mortis vs Ecchymosis:
Has oozing of blood after incision
Livor Mortis
Livor Mortis vs Ecchymosis:
No oozing of blood after incision
Ecchymosis
Post Mortem Clot vs Ante Mortem Clot:
Assumes blood vessel shape
Post Mortem Clot
Post Mortem Clot vs Ante Mortem Clot:
Seldomly assumes blood vessel shape
Ante Mortem Clot
Post Mortem Clot vs Ante Mortem Clot:
Rubbery
Post Mortem Clot
Post Mortem Clot vs Ante Mortem Clot:
Non-rubbery
Ante Mortem Clot
Next 3 stages of death after secondary changes
Desiccation
Putrefaction
Autolysis
General drying and wrinkling of fluid-filled organs
Desiccation
Greenish blue discoloration with odor
Putrefaction
Bacteria responsible for the release of gas which causes the odor of a dead body
Clostridium Welchii
Hydrogen sulfide + Hemoglobin = ?
Sulfhemoglobin (green coloration)
The self-digestion of the cells by their own enzymes
Autolysis