INTRODUCTION TO PATHOLOGY Flashcards
Area of science focusing on all the changes in cells, tissues, and organs that underlie a disease.
Pathology
It is the study of diseases
Pathology
What are the 4 aspects of pathology?
- Etiology
- Pathogenesis
- Molecular and Morphologic Changes
- Functional Derangement & Clinical Manifestations
This refers to the cause: genetic/acquired
Etiology
What are 2 causes based on etiology?
- Genetic
- Acquired
It is the manner/sequence of events on how the disease had developed.
Pathogenesis
This refers to the changes in cells -> tissues -> organs due to disease.
Molecular and Morphologic Changes
Even the normal functioning of organs would be affected, and as a result, the patient will show manifestation of disease.
True or False
TRUE
This refers to the incomplete/defective development of a tissue/organ
Abnormalities of cell growth/developmental defects
Aplasia
Aplasia shows some resemblance to the normal adult structure.
True or False
False
shows no resemblance
What are the paired structures for Aplasia?
kidneys & gland
This is the complete non-appearance/absence of an organ
Abnormalities of cell growth/developmental defects
Agenesia
This is the failure of an organ to reach its normal mature adult size (normal appearance)
Abnormalities of cell growth/developmental defects
Hypoplasia
This is the failure of an organ to form an opening - condition in which an office or passage in the body is closed or absent
Abnormalities of cell growth/developmental defects
Atresia
What is blocked/absent in biliary atresia?
biliary duct
Biliary atresia does not happen in newborns
True or false
FALSE
may happen in newborns
This happens when the anus is missing or doesn’t have a hole.
Imperforate anus
It is a type of birth defect of a baby’s ear where there is an absence of the ear canal
microtia
An injury can be characterized into what?
Reversible or irreversible
In general, what causes an injury?
Injurious Stimuli or Stressful Stimuli —> Normal Cells
all normal cells may be exposed to a lot of injurious stimuli or stressful stimuli and exposure to those stimuli can lead to what?
Injury
What causes adapted Normal Cells?
Reversible Injury —> “cellular adaptations”
In irreversible injury, the unaffected cell can get back to its normal state or condition by using a single cellular adaptation mechanisms
True or False
False
reversible injury; affected cell; multiple cellular adaptations
Reversible Injury using “cellular adaptations” causes what?
Adapted Normal Cells
Irreversible Injury —> “apoptosis (physiologic), necrosis (pathologic)” causes what?
Dead cells
This is the type of injury wherein the affected cell can no longer get back to its normal state. It is considered “the point of no return”
Irreversible injury
This type of injury causes cell death
Irreversible injury
What are the two categories of cell death?
apoptosis and necrosis
Among the two categories of cell death, which among the two are patterns of cell death?
both are patterns of cell death.
Apoptosis is a natural process
True or False
True
This is the type of cell death due to a disease
Necrosis
This is the type of cell death that is physiologic
Apoptosis
This refers to acquired decrease in tissue or organ size
Atrophy
What are the two types of atrophy?
- physiologic
- pathologic
This is the type of atrophy that occurs as a consequence of maturation.
Physiologic
Give an example of a physiologic atrophy
atrophy of thymus during puberty & atrophy of brain and sex organs
At birth the thymus is very big, but as one ages, the thymus gets smaller.
True or False
True
The fact that the thymus decreases in size, as the person ages is what type of atrophy?
physiologic atrophy
In physiologic atrophy, the thymus increases in size, as the person ages
True or False
False
the thymus decreases
the brain and sex organs undergo atrophy at the age of what?
At the age of 50
The decrease in size of the brain and sex organs, at age 50, is normal.
True or False
True
decrease in uterus and breast size after childbirth is an example of physiologic atrophy
True or False
True
this is the type of atrophy wherein there is a decrease in tissue or organ size is due to a disease
Pathologic atrophy
What are the 6 types of pathologic atrophy?
PVEESA
- Pressure atrophy
- Vascular atrophy
- Exhaustion atrophy
- Endocrine atrophy
- starvation/Hunger atrophy
- Atrophy of Disuse
This pathologic atrophy may happen because of the sudden cut off of blood supply
Vascular atrophy
This pathologic atrophy may happen due to lack of nutritional supply; lack of nourishment
starvation/Hunger atrophy
This atrophy may develop due to excessive workload.
Exhaustion atrophy
This type of atrophy may happen because of lack of hormones needed to maintain normal size.
Endocrine atrophy
This is the type of atrophy wherein there is a decrease in tissue or organ size is due to inactivity of diminished function; lack of activity
Atrophy of Disuse
This happens when there is persistent pressure/continuous pressure on an organ or tissue may cause direct injury to the cell causing it to become smaller; too much pressure exerted to an organ or tissue
Pressure atrophy
hyper means what?
increase
In both hypertrophy or hyperplasia there is an increase in tissue or organ size.
true or false
True
This is due to an increase in the size of individual cells comprising an organ.
Hypertrophy
This is the type of atrophy wherein NO NEW CELLS ARE PRODUCED.
Hypertrophy
this is an increase of [skeletal] muscle due to excessive exercise.
Physiologic hypertrophy
This may happen if one of the paired organs is removed.
Compensatory hypertrophy
Give an example of compensatory hyperplasia
RENAL HYPERPLASIA
When one of your kidneys are removed, the other kidney will increase in size. This is called…
compensatory hypertrophy.
Give an example of Pathologic hypertrophy
hypertrophy of myocardium due to aortic valve disease or hypertension
hypertrophy of myocardium due to aortic valve disease or hypertension is what type of hypertrophy?
Pathologic hypertrophy
This is due to an increase in the number of cells making up the organ.
Hyperplasia
in hypertrophy, new cells are produced.
true or false
false
hyperplasia
Erythroid bone marrow Hyperplasia is what type of hyperplasia?
Physiologic
The increase in breast size during puberty is what type of hyperplasia?
physiologic hyperplasia
The increase in breast and uterus size during pregnancy is what type of hyperplasia?
physiologic hyperplasia
bone marrow hyperplasia (Erythroid bone marrow hyperplasia) may develop in what conditions?
may develop among individuals living in high altitudes.
This type of hyperplasia that may develop among individuals living in high altitudes.
bone marrow hyperplasia (Erythroid bone marrow hyperplasia)
This type of hyperplasia is due to disease
Pathologic
This type of hyperplasia may give rise to neoplasm
Pathologic hyperplasia
This is the type of hyperplasia that may be due to stimulation of growth factors.
Pathologic hyperplasia
This hyperplasia happens with infants from a diabetic mother
PATHOLOGIC HYPERPLASIA
Hyperplasia of pancreatic islet in infants of a diabetic mother (stimulated by high glucose level)
What type of hyperplasia?
PATHOLOGIC HYPERPLASIA
Lymphoid tissue hyperplasia occurring after localized inflammation
What type of hyperplasia?
PATHOLOGIC HYPERPLASIA
Increase in the number of lymph nodules (as noted in TB of cervical lymph nodes)
What type of hyperplasia?
PATHOLOGIC HYPERPLASIA
Hyperplasia of endometrium due to excessive production of estrogen (excess hormonal stimulation)
What type of hyperplasia?
PATHOLOGIC HYPERPLASIA
Diffuse crowding of epithelial cells forming papillary projections
What is this disease called?
Grave’s Disease
Grave’s Disease
What type of hyperplasia?
PATHOLOGIC HYPERPLASIA
This involves transformation of adult cell to another adult cell type
Metaplasia
Metaplasia is considered as an IRREVERSIBLE PROCESS
True or False
False
Reversible process
This refers to the ADULT to ADULT TRANSFORMATION
Metaplasia
Give two examples of metaplasia
E&M
Epithelial metaplasia and Mesenchymal metaplasia
This is the type of metaplasia if the cells involved are EPITHELIAL CELLS
Epithelial metaplasia
This is the type of metaplasia if the cell involved are CONNECTIVE TISSUE CELLS
Mesenchymal metaplasia
Dysplasia is a reversible process
True or false
True
Dysplasia is also known as …
two terms
Pre-neoplastic Lesion or Atypical Metaplasia
Metaplasia and dysplasia are both reversible processes
True or false
TRUE
compared to metaplasia, in dysplasia there is NO CELL TRANSFORMATION
True or false
TRUE
Affected cells in dysplasia shows a change in what?
change in SIZE, SHAPE, and ORIENTATION
De-differentiation is also known as
Anaplasia
Anaplasia is also a reversible process
True or False
False
anaplasia is a irreversible process
Anaplasia is also a reversible process
True or False
False
anaplasia is an irreversible process
This is characterized by transformation of adult cell to PRIMITIVE or EMBRYONIC CELL TYPE
Anaplasia
Anaplasia is characterized by transformation of adult cell to what?
PRIMITIVE or EMBRYONIC CELL TYPE
This is often used as a CRITERION for malignancy
Anaplasia
Anaplasia is often used as a criterion for what?
criterion for malignancy
This refers to the process of TUMOR FORMATION
Neoplasia
Neoplasia is characterized by what?
Abnormal cells
These are cells that serve no purpose/function
Abnormal cells
Continuous proliferation of abnormal cells leads to formation of tumor, formation of new growth
True or False
TRUE
Also called tumor or new growth
Neoplasm
Neoplasm is also called …
Also called tumor or new growth
This is the study of tumors or neoplasm
Oncology
This is a common term for all malignant tumors
Cancer
Cancer is the common term for what?
for all malignant tumors
Oncology is the study of what?
Study of tumors or neoplasm
What are the two types of cancer according to behavior?
- Benign
- Malignant
This type of injury will definitely lead to cell death
Irreversible injury
This refers to programmed cell death
Apoptosis
apoptosis is considered as a physiologic phenomenon while necrosis is said to be pathologic
True ot False
True
When you say pathologic, the death of the cell is due to what?
due to a disease
This happens when the cells’ DNA and proteins are damaged beyond repair.
Apoptosis
In apoptosis, what happens when the cells’ DNA and proteins are damaged?
The cell kills itself by apoptosis
In apoptosis, the affected cell becomes bigger.
True or False
False
becomes smaller
In apoptosis, the affected cell becomes bigger.
True or False
False
becomes smaller
In this pattern of cell death, there is a reduction in cell size.
Apoptosis
there is cell shrinkage in necrosis
True or False
False
apoptosis
The plasma membrane remains intact and since the plasma membrane remains intact, the cellular contents do not leak out.
True or False
True
What is the reason why in apoptosis there is no inflammation?
no inflammation since there is no leakage of cellular contents
why is there no leakage of cellular contents in apoptosis?
because the plasma membrane remains intact
This pattern of cell death is considered accidental and unregulated
Necrosis
Apoptosis; cell shrinkage - necrosis;
cell swelling
In necrosis, what is enlarged?
affected cells are usually enlarged
In necrosis, what happens to the plasma membrane?
The plasma membrane is disrupted
In necrosis, what happens when there is a leakage?
there is inflammation
Inflammation ocurs because of what?
Because of a leakage of cellular contents in the plasma membrane
Give one example of Dysplasia
cervical intraepithelial neoplasia
This is a stage in the cellular evolution to
cancer
a pre-neoplastic lesion
In Dysplasia, there is normal growth and differentiation ; variation of size and shape
True or False
False
Abnormal growth… ; variation of size and shape and orientation
What is another term for Dysplasia?
PA
Pre-neoplastic Lesion or Atypical Metaplasia
This cellular adaptation may lead to cancer but not necessarily
Dysplasia
This is a type of necrosis due to sudden cutoff of blood supply.
Coagulative necrosis
This type of necrosis usually happens in solid organs like the heart kidneys and adrenal glands but definitely not in the brain.
Coagulative necrosis
Coagulative necrosis is a type of necrosis usually happens in solid organs like the heart kidneys, adrenal glands, and the brain.
True or False
False
Definitely not in the brain
Coagulative necrosis usually happens in solid organs like what?
- heart
- kidneys
- adrenal glands
In coagulative necrosis, the affected organ on gross inspection, appears like what?
Appears like a boiled material
This type of necrosis may happen due to complete digestion of dead cells.
Liquefactive necrosis
This type of necrosis is characterized by softening of necrotic material due to the action of hydrolytic enzymes
Liqufactive necrosis
Liquefactive necrosis is characterized by softening of necrotic material due to the action of what?
due to the action of hydrolytic enzymes
In liquefactive necrosis, affected organs appear …
appears liquidy and creamy yellow
Affected organs in liquefactive necrosis appears liquidy and creamy yellow because of what?
because of pus
Affected organs in liquefactive necrosis appears liquidy and creamy yellow because of what?
because of pus
This type of necrosis is a combination of coagulative and liquefactive necrosis.
Caseous necrosis
The affected organs of this type or necrosis appears soft and greasy resembling cottage cheese.
Caseous necrosis
Affected organs of caseous necrosis appears as what?
appears soft and greasy resembling cottage cheese.
Caseous necrosis is usually seen in what?
in tuberculosis
This type of necrosis is usually seen in tuberculosis
Caseous necrosis
This type of necrosis is due to immune reactions in the blood vessels.
Fibrinoid necrosis
In this type of necrosis, the changes are too small to see grossly.
Fibrinoid necrosis
In fibrinoid necrosis, the affected vessel appears thickened macroscropically.
True or False
False
Microscropically
This type of necrosis is seen in acute pancreatitis
Fat necrosis
Fat necrosis is seen in acute pancreatitis
True or False
True
In fat necrosis, the necrotic material appears like what?
Necrotic material appears like chalky white precipitate.
In this type of necrosis, the necrotic material appears like a chalky white precipitate
Fat necrosis
This type of necrosis is not actually a specific pattern of cell death.
Gangrenous necrosis
This type of necrosis is usually applied to a limb generally to the lower leg that has lost its blood supply.
Gangrenous necrosis
Gangrenous necrosis is a type of necrosis that is usually applied where? that has lost its blood supply.
to a limb generally to the lower leg that has lost its blood supply
refers to a leg to a lower extremity that has lost its blood supply.
Gangrenous
What are the two types of gangrenous necrosis?
- wet gangrene
- dry gangrene
Wet gangrene is due to what?
Due to venous occlusion
Dry gangrene is due to what?
Due to arterial occlusion
This type of gangrene is due to venous occlusion
Wet gangrene
This type of gangrene is due to arterial occlusion
Dry gangrene
This is actually a tissue reaction to an injury.
Inflammation
It is a vascular response to an injury.
Inflammation
what are the five cardinal signs of inflammation?
Ouch! Red Hot Tumor FuntionLaes (functionless)
- Pain
- Redness
- Heat
- Swelling
- Loss of function
Dolor is …
Pain
Rubor is …
Redness
Tumor is …
Swelling
Loss of function is …
Functio laesa
This is s due to increased dilation of blood vessels resulting in an increase rate of blood flow at the site of injury.
Rubor
Rubor is due to decreased dilation of blood vessels resulting in an increased rate of blood flow at the site of injury.
True or False
False
increased dilation
In rubor, increased dilation of blood vessels results to what?
Results to an increased rate of blood flow at the site of injury.
What causes redness?
the increased dilatation of blood vessels in the rate of blood flow.
This is due to the release of chemical substances like bradykinin that stimulates nerve endings for pain.
Dolor/Pain
Dolor is due to the release of chemical substances like what?
due to substances like bradykinin
What does chemical substances like bradykinin do?
they stimulate nerve endings for pain.
What causes dolor?
the release of chemical substances like bradykinin causing stimulation of nerve endings for pain.
This is due to the transfer of internal heat to the surface or to the site of injury
Calor/Heat