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94 Cards in this Set
- Front
- Back
What is Health?
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- A STATE of complete PHYSICAL, MENTAL, and SOCIAL wellbeing, and not merely the absence of disease or infirmity.
-A PROCESS of CONTINUOUS ADJUSTMENT to the CHANGING (enviroment) DEMANDS of living and of the CHANGING MEANINGS we give to life |
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What is Disease?
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- An ABNORMAL CONDITION that may IMPAIR bodily FX, cause Discomfort, Social Problems, Death.
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What may diseases include?
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1. Injuries
2. Disabilities 3. Disorders 4. Syndromes 5. Infections 6. Alterations of Behavior 7. Atypical Varioons of Structures and Fx 8. Neoplasms Dz= abnormal fx or impairment |
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Pathology = is a _______ Discipline between ____ _____ and ____ ____.
(pathology is visual) |
Pathology = is a _BRIDGING_ Discipline between _BASIC SCIENCE_ and _CLINICAL PRACTICE_.
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General vs. Systemic Pathology:
1. General Pathology- -ex: |
- the Basic Rxn of Cells & Tissues to the Abnormal Stimuli that Underlie All Diseases.
=ALL organ systems -Ex: Adaptation, Cell Injury & Death, Inflamation & Repair, Immunity, Genetic Disease, Neoplasia, Hemodynamics |
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General vs. Systemic Pathology:
2. Systemic Pathology- ex: |
-The specific responses of ORGANS and Tissues to stimuli:
ex: Cardiovascular system, GI system, Endocrine system, genitoruinary system, Hematopoietic system, Hepatobilary system, CT, CNS |
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Path: Academic Discipline vs. Medical Specialty:
1. Anatomic Pathology (med)- -4 ex: |
Anatomic Path- Diagnosis of disease based on the examination of TISSUES & CELLS
ex: 1. Surgical path, 2. Cytopathology, 3. Autopsy path, 4. Forensic path |
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Path: Academic Discipline vs. Medical Specialty:
2. Clinical Pathology (lab med)- -6ex: |
Clinical Path- Diagnosis of disease based on the analysis of BODY FLUIDS.
ex: 1.Clinical chem, 2.Hematopathology, 3.Blood banking & transfusion medicine, 4. Medical Microbiology, 5. Medical cytogenetics, 6. Immunology |
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What is a lesion?
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Lesion- any clinical or molecular abnormality.
- Anything abnormal clincally or moleculuarlly =>LESIONS CAN BE VISIBLE OR INVISIBLE |
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Examples of VISISBLE Lesions-
6 (but more than that) |
1. Traumatic ulcer
2. Leukoplakia 3. Carious Lesions-(some xerostomia related caries) 5.Melonoma-Palatal Mucosa 6. Basal Cell Carcinoma |
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Visible Lesions:
1. Traumatic ulcer- is? Cancerous? 2. Leukoplakia- is? 3. Melonanoma- Palatal Mucosa- cancerous/ malaginant or beningned? location importance? |
1. Traumatic ulcer -discountity in the epithelium- Not cancer- just traumatic tumor
2. Leukoplakia- whice lesion calus like, can't be wiped away 3.Melonoma- Palatal mucosa= Lesion on palatal mucosa- not beigned, MOST COMMMON SITE FOR MELONAMOA= PALATE |
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Visible Lesions may range from the ____ to the ______
ex? |
Visible Lesions may range from the _INSIGNIFICANT_ to the _GROTESQUE_
ex-Basal Cell Carcinoma- Advanced= has potential to evade locally - Exepahlotrigeminal Angiomotosis- Sturge Weber syndrome= ANGIOMA |
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Why may a lesion be invisible? (location)
Example? |
-Bc it is located deep within the body.
ex: lung cancer lesion in xray- metastic to gingiva (Squamos cell carcinoma or bronchial carcinoma - metastic to gingiva before found) -Breast cancer- metatsitc lesion of mandible bone. |
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Why else may a lesion be invisible?
3 examples: |
BC it is a MOLECULAR LESION
ex: 1. PKU (phenylketonuria) 2. Schizophrenia 3. Diabetes Melitus |
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Lesion invisible bc it's a molecular lesion:
1. PKU-invisible BIOCHEMICAL Lesion -Inherited by: -Caused by: -Problem w/phenylalanine: -Solution: -Diagnosis: |
-Inherited by: Autosmal Recessive Disorder of Phenylalanine megabolism=> DEVELOPMETNAL dz.
-Caused by: MUTATION in the Enzyme that conversts Phenylalanine to Tyrosine (PHENLYALANINE HYDROXYLASE) -Problem w/phenylalanine: It's TOXIC to DEVELOPING Brain & causes Profound, Irrreversible Mental Retardation (COGNITIVE DISORDER) -Solution: resticted die Diagnosis: - GUTHERIE TEST baby |
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what is the most common form of skin cancer?
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Basal Cell Carcinoma
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Taxonomy-
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Science of Classification
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Nosology-
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Deals w/ Classification of Dz.
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Naming a dz ideally should?
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Give a clue to the CAUSE or ORGAN SYSTEM involved
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Disease Names Change overtime/Not static: What is the name NOW?
1.Moniliasis- 2. Geographic Tongue- 3. Odontogenic Keratocyst- 4. Calcifying Odontogenic Cyst- |
1.Moniliasis- CANDIDIASIS
2. Geographic Tongue- ERYTHEMA MIGRANS 3. Odontogenic Keratocyst- KERATOCYSTIC ODONTOGENIC TUMOR 4. Calcifying Odontogenic Cyst- CALCIFYING CYSTIC ODONTOGENIC TUMOR |
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Some Diseases have multiple names ex- what are they called NOW?
1.Periapical Cementosseus Dysplasia- 2. Paget Disease of Bone- |
1.Periapical Cementosseus Dysplasia- CEMENTOMA
2. Paget Disease of Bone-OSTEITIS DEFORMANS |
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Some disease may be id by eponyms (person name):
1. lou Gehrig Disease- 2. Christmas Disease- 3.Lesch-Nyhan Syndrome- 4. Garlin Syndrome- 5. Garlin Cyst- 6. Pindborg Tumor- |
1. lou Gehrig Disease-AMYOTROPHIC LATERAL SCLEROSIS
2. Christmas Disease- CLOTTING FACTOR 9 DEFICENCY 3.Lesch-Nyhan Syndrome- HYPOXANTHINE-GUANINE PHOSPHORIBOSYLTRANSERASE (HGPRT) DEFICIENCY 4. Garlin Syndrome- BASAL CELL NEVUS SYNDROME 5. Garlin Cyst- CALCIFYING ODONTOGENIC CYST 6. Pindborg Tumor- CALCIFYING EPITHELIAL ODONTOGENIC TUMOR |
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Diseases vary in their PREVALENCE:
Rare Disease= Ds w/ prevelance? = _____ disease From rarre to common: |
LOW
= ORPHAN's Disease Rare--> common: Ewing Sarcoma--> Garlin syndrome, Multiple Endocrine Neoplasia 2, sickle cell anemia, treacher collins, CF, Marfans. |
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What are the 4 Key aspects of a Disease Process?
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1. Etiology
2. Pathogensis 3. Morphological Changes 4. Clinical significance |
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4 Key Aspects of Dz Process:
1. Etiology- ex: Mucoviscidosis (Cystic Fibrosis) |
- CAUSE of a Disease process
ex: CAUSE of CF= Mutation in CFTR (CF Transmembrane Conductance Regulator) Gene- Varying degress of gene = Systemic Dz- effects lungs & pancreas) |
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4 Key Aspects of Dz Process:
2. Pathogenesis- ex: Mucoviscidosis (Cystic Fibrosis) |
-MECHANISM of Disease development
ex: MECHANISM of CF=Accumulation of Bacteria & degeneration of DNA & immune cells =>Chloride channel fx- Absent or defected & Airways plugged with CF's thick, viscous mucus secretions. *1.Defective PROTEIN product 2.Defective Chloride CHANNEL 3.Viscous SECREATIONS 4.Ineffective CLEARANCE 5.Plugging & INFECTIONS 6. Tissue DAMAGE |
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4 Key Aspects of Dz Process:
3. Morphological Changes- ex: Mucoviscidosis (Cystic Fibrosis) |
-STRUCTURAL Changes induced in cells & organs
Ex- Struct/fx- Airways, liver, pancreas, si, skin (sweat glands) |
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4 Key Aspects of Dz Process:
4.Clincial Significance- HOW CF DIAGNOSED?? |
- FUNCTIONAL consequences of the Morph changes
DIAGNOSED: Sweat Cholride Test |
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What are the 6 Categories of Disease?
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1. Developmental
2. Infectious 3. Neoplastic 4. Metabolic 5. Immune Mediated- 6. Reactive- |
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Catergories of Dz-6:
1. Developmental- -3 ex |
1. Developmental- Genetic, environmental Infleuenced
ex: 1. Cherbuism- Autosomal Dominant- chubby cheecks, radioluceny trhogught jaw- expansion of jaw 2.Gardner Syndrome- A.Domninant- A familial intestinal polyposis syndrome (oolyposis of colon- pink lesion- malignant trasformation-remove to reduce colon cancer) 3. amelogensis Imperfecta- chalky looking enamel- easily fractures (misdiagnosis0 sever Flurosis) |
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Catergories of Dz-6:
2. Infectious- Ex-3 |
2. Infectious- Bacteria, Viruses, Fungi
Ex: 1. 1' Herpetic Gingivostomatitis- (80% of pop infected w/ herpes)- subclinical- fever, multiple ulcers--> VIRAL Dz 2. Acute Pseudomembraneous Candidiasis- Yeast infection= Thrush- wipes off 3. Histoplasmosis- 1' lung infection, (ms, valves, fever???) -misdiagnosised: infection/neoplasm |
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Catergories of Dz-6:
3. Metabolic- Ex-2 |
3. Metabolic- Endocrine
Ex: 1. Acromegaly- Growth hormone- secreting pituitary Adenoma-(condyle response- proliferation to class3 due to response to GH.. Pathogensis) 2. Hypothyrodism- short stature, generalized delayed dental erruption= young dental age |
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Catergories of Dz-6:
4.Neoplastic- ex-5 |
4.Neoplastic-benign, malignant
ex: 1. Squamous Cell Carcinoma-stony hard 2.Metastic Brochogenic Carcinoma to gingiva- oral-lung cancer metastic to gingiva 3.Acute Leukemia- -biopsy- generalized enlargement to lungs 4. Hemangioma- benign vascular -bloodvessles- enlargement (ex tongue) 5. Neurofibromomatosis- lesions on skin- non painful, oral mucoasa.= ADinherited. |
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Catergories of Dz-6:
5. Immune- Mediated ex-4 |
5. Immune-mediated- Allergy, hypersensititvitym autoimmunity
Ex: 1. Recurrent Apthous (ulceration) Stomatitis- Minor Aphtha- WBC T-lymph- below mucosa & attack mucosa - no scar 2. Mucous Membrane Pemphigoid- Desquamative Gingivitis- epithelium sluff off- # of dz can cause this 3.Autoimmunine Thrombacytopenic Pupura- AB to platlets sequestered to spleen=> Level of Platelets DECREASE - bleeding into skin (redish-purplen dots on skin) = Decrease level of platlets leads to this dz. 4. Allergic Conctact stomatitis- Buccal mucosa irritation- immune mediatead mucositious- to cinamon in gum- allergy or nickle allergy |
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Catergories of Dz-6:
6. Reactive- 3ex- |
6. Reactive- TRAUMATIC, physical, chemical, factitial (pt. caused), iatrogenic (unknown caused) injuries.
=> Body Rxn to irritant. ex: 1. Pyogenic Granuloma-proliferation of blood vessels- (ex calculous bridge holding tooth in) 2. Gingival Hyperplasia (generalized)- Diabetes Melluties 3. Trigeminal Neuroaliga- Episodic triger zone = vigourous tooth brushing. 4- ish ( dental hypoplasia- rxn to radioation in childhood- or DEVELOPMETNAL**) |
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Stages in the Cellular Response to Stress and Injury- 6 ish
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1. Normal Cells (homeostasis)--> injury or stress to cells-->
2. Adaptation ( Hypertrophy, hyperplasia, atrophy, metaplasia) --> Morphologic Alterations (steps 3&4) 3. cell Injury --> 4. Reversibile cell Injury--> 5.Irreversible Cell Injury--> 6. Cell Death ( apoptosis or necrosis) |
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What is hypertrophy?
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-Increase Size of an organ due to the Increased SIZE of its cells, w/out an increase in cell 3 (hyperplasia)
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Where is pure hypertrophy occur?
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Only in skeletal and Cardiac Muscle
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Increased size of salivary glands- Parotid and submandibular Increases in alcholics causing SIALADENOSIS0 also in bulimics- what is this due to?
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hypertrophy
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what is Hyperplasia
2- forms |
-Increase Size of tissue or organ due to INCREASED # of Cells.
2 forms- (mostly smooth m.) 1. Physiologic 2.Pathologic |
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Some Hyperplasia's are physiologic-3
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1. Erythroid Bone Marrow hyperplasia at high altitudes- bone marrow repicate to store more O2.
2. Cyclic Enlargement of Endometrium & Breast during Menstrual Cycle ( back to normal after) 3. Regrowth of Liver Parenchyma after surgical excision is Compensatory |
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Some hyperplasias are pathologic-1
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1. Epithelial hyperplasia caused by HPV- on lip cauflower looking - squamos carcinoma
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Hyperplasia may be combined with Hypertrophy- 2
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1. Enlargement of uterus of pregnancy, myometrial smooth muscle cells increased
2. Benign Prostatic Enlargement |
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Hyperplasia's:
1. Fibrous Hyperplasia- 2. Inflammatory papillary Hyperplasia- |
Both due to ill fitting dentures
1. Fibrous Hyperplasia- fibroma-tissue 2. Inflammatory papillary Hyperplasia- palate |
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Hyperplasias:
3. Osseous Hyperplasia- 4. Sub-pontic Osseous Hyperplasia- |
3. Osseous Hyperplasia- HARD TISSUE - bony hard- above teeth in gums=Exostosis= bone proliferation
4. Sub-pontic Osseous Hyperplasia- Reactive lesion- w/ dentures= bone proliferation- reactive to contents in anatomical location |
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Hyperplasias:
5. Hyperplastic Dental Follcle- 6. Condylar Hyperplasia- |
5. Hyperplastic Dental Follcle-Enlarged radiolucency follicle.
6. Condylar Hyperplasia-Idiopatic Unilateral growth of mandibular condyle ( clinically- facial assymetry= open bite) |
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Hyperplasias:
7. GINGIVAL HYPERPLASIA -9 (5 dz) |
1.Inflammatory Hyperplasia-Due to poor hygiene and diabetes
2. Drug-Induced Enlargement- Ca+ Channel Blocker, Cyclosporine, dilantin 3. Leukemic infiltrates 4. Amyloid Infiltration 5. Klippel-Trenaunay Webber syndrome 6. Juvenile hyaline fibromatosis 7. Cowden Syndrome 8. Wegener Granulomatosis 9. others- ooo |
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Hyperplasias:
8. Gynecomastia- |
Hyperplasia of male breast
- hormone secreating tumor that causes this |
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What is Atrophy and what are the 2 types?
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Atrophy- Reduction of Size of Cells, Tissues or Organs
2 types: Pathologic & Physiologic atrophy |
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Pathologic Atrophy-2
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Pathologic Atrophy-
1.atrophy of SKELETAL MUSCLE following DENERVATION- loss of innervation to skeletal m. 2.Atrophy of the BRAIN due to Ischemia |
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Physiologica Atrophy- 2
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1. Atrophy of the uterus after pregnancy- back to normal
2. Involution of the thymus in early adult life |
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Pathologic Atrophy may result from: 6 things-
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1. Disuse- don't use lose- cast
2. Denervation- nerve supply compromised 3. Lack of Trophic hormones 4. Ischemia- Reduction in Blood Supply 5. Malnutrition 6. Idiopathic- Romber syndrome- hemofactial atrophy) |
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Atrophy of Brain in Atherosclerotic dz or alzheimer dz- what happens?
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Gyri- narrower
Sulcus- wider |
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What is metaplasia?
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The replacement of 1 Mature Cell Type by another 1, so it can netter cope in its present environment
- usually a "tougher" cell type |
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What is the metaplasia that occurs in smokers?
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Replacement of Bronchial STRATIFIED COLUMNAR epithelium by SQUAMOUS Epithelium = SQUAMOUS METAPLASIA- protects for litmited amt of time
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What is the Intestinal Medipalsia of the esophagus called and waht is it caused by?
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Barrett's esophagus- Caused by chronic irritation by gastric juices in GASTROESOPHOGEAL REFLUX.
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IS metaplasia reversible?
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YES reversibly and tissuye reverts back to its normal state after irriatnt has been removed
HOWEVER, if irritant persists, metaplasia may progress to dysplasia and the to NEOPLASIA! |
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Necortizing Sialometaplasia
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- Palate only= reactive condition
- salivary gland tissue=> squamos tissue |
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How Cells adapt to NON-LETHAL INJURY-
Adaptive-4 vs. Non-adaptive- 2 |
Adaptive- hyperplasia, hypertrophy, atrophy, metaplasia
NON-ADAPTIVE: 1. Aplasia 2. Hypoplasia |
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Agenesis?
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- Complete absence of an organ (organ was never there)
(aplasia -used sometimes but not same meaning) |
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Aplasia?
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Absence of an organ w/ retention of the organ rudiment.
(Agensis- -used sometimes but not same meaning) |
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Reacher Collins Syndrome
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Mandibulo-Facial Dysplasia
- Agenesis of exterior portion of ear |
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Agensis vs aplasia in a radio graph of teeth- missing vs smaller than normal??
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Agensis= congenitally missing
Aplasia- teeth present but smaller than normal |
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Hypoplasia?
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Incomplete development of an organ
-Organ never reaches its normal size |
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Dysplasia?
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= Abnormal Formation.
bad growth, pre malignant lesion... |
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Epithelial dysplasia-
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Can appear red, white, or both, abnormal maturation of epithelial cells
-precancerous biopsy used |
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Ectodermal Dysplasia-
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Not precancerous
-Ecto derm- skin, hair, sweat glands |
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Fibro-osseous dysplasia
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commonly seen in jaw bone radiolucent radiograph
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Fibrous Dysplasia
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Enjlarged jaw- tumor in jaw, causes expansion of the mandible
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Reversible Changes (cells?)
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1. Cellular swelling (hydropic, casuclar, change)
2. Fatty Change- LIVER-> alcholoics go back unless too far |
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Irreversible changes (cells)
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- now get cell death- which occurs in 1 of 2 ways:
1. necrosis 2. apoptosis (mechanism difference between the 2) |
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Necrosis-
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Enxymatic digestion & leakage of cellular contents
- messy, cells break down, inflame cells, |
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Apoptosis-
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Phagocytosis of apoptotic cells & fragments. -death of cell 1 at a time--> clean- macrophages there handy to clean things up.
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What are the 3 nuclear changes that signal cell death in NECROSIS?
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1. Pyknosis
2. Karyorrhexis 3. Karyolysis |
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Nuckear changes that signal cell death in Necrosis:
1. Pyknosis- |
-small, dark, & shrunken nucleus..
(dark nucleus=hyperchromatic) |
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Nuckear changes that signal cell death in Necrosis:
2. Karyorrhexis- |
-nuclear fragmentation.
(-nuckeus in small pieces) |
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Nuckear changes that signal cell death in Necrosis:
3. Karyolysis |
- dissolution of the nucleus.
(Can't really see anything) |
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What tells you Whether cells have DIED or not? (in Necrosis?)
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The NUCLEI
(-Pyknosis, karyorrhexis, karolysis) |
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What tells you HOW the cells have Died?? (in Necrosis?)
-4General tissue patterns of necrosis |
the CYTOPLASM
- 1. Coagulative necrosis 2. Liquefactive necorsis 3. Casseous necorsis 4. Fat necrosis |
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-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
1. Coagulative necrosis- |
- Typically seen in HYPOXIC Injury (myocardial infarct)
(-Most often seen in heart, but can see in kidneys) -->Have Basic Shape but No Internal detail |
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-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
2. Liquefactive necrosis- |
Typically seen in bacterial infections!
-(Brain- cerebral infarcts, and Abcess formations- pus) |
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-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
3. Caseous necrosis |
Necrotic tissue is converted into a Cheesy Mass (Tuberculosis)
-(Can't tell granulomatous inflamation??????? idk?) |
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-4 General tissue patterns of necrosis (Cytoplasm-How cells have died)
4. Fat necrosis- |
Characteristically seen in ACUTE Pancreatitis
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Apoptosis-
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Programmed Cell Death through Activation of an INTERNAL SUICIDE PROGRAM
( very clean, engineered celll sucided, neat & clean) |
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What is Capsases?
What does Capases fx/do? |
Capases- Enzyme responsible for Apoptosis of selected unwanted cells,
Capases fx:-Selectively Eliminates unwanted cells w/minimal disturbance to the surrounding cells. |
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In Apoptosis- after capases selectively eliminates the unwanted cell- what happens to the cell and its parts (PM, etc)?
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The PM- remains intact but its structure is Altered so that it becomes a Target for Phagocytosis
-The dead cell is Rapidly Cleared before its contents have leaked out &therefore does NOT elicit an INFLAMMATION reaction. (inflamation is what cuases messy necorsis) |
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Apoptosis: Physiologic vs. Pathologic
1. Physiologic- 4 examples of when |
1. Programmed destruction of cells during embryogenesis
2. Hormone-dependent Involution of Tissues in the Adult 3.Deletion of potentially harmful Self-reactive lymphocytes 4. Cell Death induced by cytotoxic T-cells (Virally-infected or neoplastic cells) |
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Apoptosis: Physiologic vs. Pathologic
2. Pathologic-4 examples of when apoptosis is pathological |
1. If DNA repair mechanism can't cope w/damage, the cells kills itself by apoptosis. ( if dna can't repair)
2. Cell death in certain viral infections (hepatitis) 3.Pathologic atrophy in organs after obstruction. (ex salivary glad tissue -atrophy &individual cells death-apop) 4. Cell Death in Tumors* |
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What are the 2 typpes of Pigments?
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1. Exogenous Pigments
A.Carbon- anthracosis (air polutant) B.Tatooing -skin & mucosal tattoos. (amalagam embedded in tissue) 2.Endogenous Pigments A.Lipofucscin B. Melanin-formed in mylanocytes c. Hemosiderin-hemoglobin derived d. Bilirubin |
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2 Pigment types
1. Exogenous Pigments - 2 ex |
1. Carbon- anthracosis (air polutation.
2. Tatooing -skin & mucosal tattoos. (amalagam embedded in tissue) |
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2 Pigment types
2.Endogenous Pigments -4 ex |
1. Lipofucscin- yellow brown- aging pigments- wear & teat, move free.??
2. Melanin-formed in mylanocytes- dark 3. Hemosiderin-hemoglobin derived =>By product of RBC contains iron 4. Bilirubin-By product of RBC but does NOT contain Iron |
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What is a Pathologic Calcification?
What are the 2 types of Pathologic Calcification? |
Pathologic Calcification- the Abnormal Deposition of Calcium Salts in Tissue
2 types: 1. Dystorphic calcifications 2. Metastatic calcifications |
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2 types of Pathologic Calcification:
1. Dystrophic Calcification- |
- Occurs in NONViable tissues or Dying tissues in the presence of Normal Serum Calcium levels
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2 types of Pathologic Calcification:
2. Metastatic Calcification- |
Occurs in VIABLE tissues & is associated with Hypercalcemia
(serum calcium is elvated) |