9/18/12 a Flashcards Preview

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Flashcards in 9/18/12 a Deck (11):
1

How do you calculate the sum of resistances in parallel (TPR)?

1/R1+1/R2+...1/Rn = 1/TPR

2

How do you calculate the sum (TR) of resistances in series (e.g. total resistance in an organ)?

R1+R1+...Rn = TPR

3

Exudation and alveolar hepatization characterize what pathological process?

S. pneumoniae pneumonia

4

What do "red hepatization" and "grey hepatization" refer to?

red: extravasation of RBCs and PMNs
grey: deposition of fibrinus material

5

What is the major cause of lacunar infarcts?

hypertensive arteriolar sclerosis (lipohyalinosis and microatheromas)

6

What are Charcot-Bouchard aneurysms? What underlying process are they usu. due to?

microanerysms (<1 mm) of the small penetrating arterioles of the pons, basal ganglia, and subcortical white matter; htn

7

Is serum alkaline phosphatase high or low in CML?

low

8

Is serum alk phos hi or lo in a leukemoid reaction?

hi

9

What differentiates AML from CML on peripheral blood smear?

>20% blasts

10

What pneumoconiosis most resembles sarcoidosis?

Berylliosis

11

What cells does renal clear cell carcinoma arise from?

renal tubular cells