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76 Cards in this Set

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The intrinsic pathway of apoptosis involves Bax which is ___-apoptotic and Bcl-2 which is ____-apoptotic. Changes in proportions of anti- and pro-apoptotic facts lead to increased mitochondria permeability and cytochrome c release
Bax- pro, Bcl-2 = anti
The brain, bacterial abscess, and pleural effusions are considered ____ necrosis
liquefactive
TB and systemic fungi infections cause ____ necrosis
caseous
The pancreas via saponification goes through ____ necrosis
fatty
Blood vessel go through ____ necrosis
fibrinoid
This type of necrosis is common in the limbs and GI tract
gangrenous necrosis
Is cell injury caused by fatty change reversible?
Yes
Is cell injury that results in nuclear pyknosis, karyolysis (nuclear fading) and karyorrhexis (nuclear fragmentation) reversible or irreversible?
irreversible
Is plasma membrane damage to the cell, lysosomal rupture and mitochondrial permeability reversible or irreversible modes of cell injury?
irreversible
What are some organs that are susceptible to hypoxia?
heart (subendocardial tissue), kidney, neurons, liver (area around central vein), watershed areas (splenic flexure, ACA/MCA)
Infarctions of the lung, liver or intestine are red or white infarctions?
red
Infarctions are divided into 2 types according to the amount of blood present:

White infarctions (anemic infarcts) affect solid organs such as the spleen, heart and kidneys wherein the solidity of the tissue substantially limits the amount of nutrients (blood/oxygen/glucose/fuel) that can flow into the area of ischemic necrosis. Similar occlusion to blood flow and consequent necrosis can occur as a result of severe vasoconstriction as illustrated in severe Raynaud's phenomenon that can lead to irreversible gangrene.
Reperfusion injury is due to damage by ____
free radicals
The heart, kidney, and spleen undergo red or white infarction?
white

Explain defintion =
Red infarctions
(hemorrhagic infarcts),
generally affect the lungs or other loose organs
(testis, ovary, small intestines).

The occlusion consists more of red blood cells and fibrin strands. Characteristics of red infarcts include:

-occlusion of a vein
-loose tissues that allow blood to collect in the infarcted zone
-tissues with a dual circulatory system
(lung, small intestines)
-tissues previously congested from sluggish venous outflow
-reperfusion (injury) of previously ischemic tissue that is associated with reperfusion-related diseases[6] such as - -
Myocardial infarction,
stroke (cerebral infarction),
shock-resuscitation,
replantation surgery,
frostbite,
burns
organ transplantation
Is Hypovolemic/cardiogenic shock high or low output failure?

What happens to the TPR?
Is the patient hot or cold and clammy?
low output failure,

increase in TPR,

cold/clammy pt
Is septic shock high or low output failure?

What happens to the TPR?

Is the patient hot or cold and clammy?
-high output failure,
-decrease in TPR,
-hot patient due to dilated arterioles,
-high venous return
Increased pressure such as nephrolithiasis can lead to reduction in the size or number of cells. This is known as ____
atrophy
Granulation tissue is highly vascularized and ____
fibrotic
Scarring is ____ deposition resulting in altered structure and function
collagen
____ inflammation is mediated by neutrophils, eosinophils, and antibody mediated
Acute
_____ inflammation is mononuclear cell mediated. Associated with blood vessel proliferation, fibrosis. Granuloma: nodular collections of epitheliod macrophages or giant cels
Chronic
Neutrophils exit from blood vessels at sites of tissue injury via what 4 steps?
rolling,
tight binding,
diapedesis,
migration
E-selectin and P-selectin is expressed on the vasculature/stroma and is responsible for what stage of leukocyte extravasation?
rolling
E-selectin
P-selectin
is expressed on the vasculature/stroma and is responsible for leukocyte extravasation
ICAM-1 expressed on the vasculature/stroma and LFA-1 expressed on the leukocyte is responsible for what stage of leukocyte extravasation?
tight binding
ICAM-1
expressed on the vasculature/stroma and
LFA-1 expressed on the leukocyte

is responsible for leukocyte extravasation
PECAM1 is responsible for what stage of leukocyte extravasation?
diapedesis--> leukocyte travels between endothelial cells and exits blood vessel
PECAM1
is responsible for leukocyte extravasation
What bacterial products mediate neutrophil chemotaxis?

Name 4
C5a,
IL-8,
LTB4,
Kallikrein
Free radicals can be eliminated by the enzymes catalase, superoxide dismutase, glutathione peroxidase, spontaneous decay, or antioxidants (vitamins __, ___ and, ___)
A
C
E

Free radicals can be eliminated by the enzymes = 5ct
enzymes catalase
superoxide dismutase
glutathione peroxidase
spontaneous decay
antioxidants
CCl4 can cause free radical injury of the _____ leading to necrosis and _____
liver,

fatty change
Reperfusion after anoxia, especially after thrombolytic therapy can lead to free radical injury. The free radical injury is mostly mediated by _____
superoxide
What are the three stages of wound healing?
inflammatory,
proliferative,
remodeling
Fibroblasts, myofibroblasts, endothelial cells, and keratinocytes mediate what phase of wound healing?
Proliferative
(2-3 days after wound)
This stage of wound healing is characterized by deposition of granulation tissue and collagen, angiogenesis, epithelial cell proliferation, dissolution of clot, and wound contraction
Proliferative phase
This stage of wound healing is mediated by fibroblasts and is characterized by Type III collagen being replaced by Type I collagen--> leads to increased tensile strength of tissue
Remodeling
This cytokine produced by macrophages induce and maintain granuloma formation.
TNF-alpha, anti-TNF drugs can break down granulomas, leading to disseminated disease
Name some granulomatous disease?
(Bartonella Henselae) cat scratch Dz
Berylliosis
Crohn's disease
leprosy
histoplasmosis
sarcoidosis
syphilis,
TB
Is Transudate or exudate hypocellular and protein poor?
transudate
Transudate is caused by a ____ in hydrostatic pressure and a ____ in oncotic pressure
increase,

decrease
Exudate usually occurs due to what two conditions?
lymphatic obstruction
or
inflammation
Does inflammation and infection cause RBCs to fall at a slower or faster rate within a test tube?
faster
Infections,
inflammation,
Cancer,
Pregnancy,
SLE
cause the ESR to go up or down?
Increase the ESR


What causes ESR to Increaase =
5ct
Infections,
Inflammation,
Cancer,
Pregnancy,
SLE
Sickle cell,
polycythemia
CHF
cause the ESR to go up or down?
Decrease the ESR


Whst causes a decrease in ESR =
3ct
Sickle cell
polycythemia
CHF
What is one of the leading causes of fatality from toxicologic agents in children?
Iron poisoining
____ poisoning leads to cell death due to peroxidation of membrane lipids. Its symptoms can be acute such as gastric bleeding or chronic such as metabolic acidosis, scarring leading to GI obstruction
Iron
____ demonstrated via beta-pleated sheets
and
apple-green birefringence of
Congo red stain under polarized light
Amyloidosis
Amylodosis can be caused by A___, an acute phase reactant
AA
Transthyretin is derived from A___ and is seen amyloidosis seen in senile cardiac disease
AF
Amylin is a protein derived from A___ and is an amyloidosis seen in diabetes mellitus type 2
AE
Medullary carcinoma of the thyroid will produce A-CAL, which is derived from _____, and can cause amyloidosis
calcitonin
What is the amyloid protein associated with Alzheimer's disease?
beta-amyloid derived from =
amyloid precursor protein
What is the amyloid protein that is dialysis associated?
B2-microglobulin

is associated with =
dialysis
Abnormal proliferation of cells with loss of size, shape and orientation is termed ___
dysplasia
This describes neoplastic cells that have not invaded the basement membrane. There is high nuclear/cytoplasmic ratio and clumped chromatin. Neoplastic cells encompass the entire thickness
Carcinoma in situ
____plasia is irreversible and describes abnormal cells lacking differentiation, resemble primitive cells of same tissue, often equated with undifferentiated malignant neoplasms. Little or no resemblance to tissue of origin
anaplasia
____plasia is fibrous tissue formation in response to neoplasm
desmoplasia
Is grade or stage the degree of cellular differentiation based on histologic appearance of tumor?

Usually graded 1-4 based on degree of differentiation and number of mitoses per high power field; character of tumor itself
Grade
Does stage or grade have more prognostic value usually?
stage
Is grade or stage the degree of localization/spread based on site and size of primary lesion, spread to regional lymph nodes, presence of metastases; spread of tumor in a specific patient
stage
A rhabdomyosarcoma is malignant transformation of ____ muscle
skeletal
A _____ is malignant transformation of connective tissue
fibrosarcoma
Is a mature teratoma benign or malignant in a male?
malignant
The term _____ implies epithelial origin, whereas the term ____ denotes mesenchymal origin. Both terms imply malignancy
carcinoma,

sarcoma
epithelial origin

mesenchymal origin
Cachexia means =
Any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease

Cachexia is usually mediated by what cytokine?
TNF-alpha
IFN-Y
IL-6
Down's syndrome is associated with what neoplasm?
ALL

AML
Xeroderma pigmentosum and albinism are associated with what neoplasms?
-melanoma
-basal cell carcinoma

-especially
squamous cell carcinomas of skin
Chronic atrophic gastritis,
pernicious anemia,
postsurgical gastric remnants

are associated with what neoplasms?
Gastric adenocarcinoma
Chronic atrophic gastritis,
pernicious anemia,
postsurgical gastric remnants
Tuberous sclerosis (facial angiofibroma, seizures, and mental retardation) is associated with what neoplasms?
astrocytoma, angiomyolipoma, and cardiac rhabdomyoma
Actinic keratosis is associated with what neoplasm?
squamous cell carcinoma of skin
Barrett's esophagus is associated with what neoplasm?
Esophageal adenocarcinoma
Plummer-Vinson syndrome
(atrophic glossitis, esophageal webs, anemia; all due to iron deficiency)

is associated with what neoplasm?
squamous cell carcinoma of esophagus

aka =
Plummer-Vinson syndrome
Cirrhosis (alcoholic, hepatitis B or C) is associated with what neoplasm?
hepatocellular carcinoma
The condition ulcerative colitis is associated with what neoplasm?
colonic adenocarcinoma
Paget's disease of the bone is associated with what neoplasm?
secondary osteosarcoma and fibrosarcoma
Immunodeficiency states predisposed the person to develop what neoplasm?
malignant lymphomas
AIDS predisposes a person to develop what neoplasms?
aggressive malignant lymphomas
(non-Hodgkin's)

Kaposi's sarcoma
Autoimmune diseases (Hashimoto's thyroiditis and myasthenia gravis) is associated with what neoplasm?
lymphoma
Acanthosis nigricans (hyperpigmentation and epidermal thickening) is associated with what neoplasm?
visceral malignancy
(stomach, lung, uterus)
Dysplastic nevus is associated with what neoplasm?
malignant melanoma

Can be seen in what Dyspalstic event =
Dysplastic nevus