2/21 UWORLD test # 20 Flashcards

1
Q

Q 1. There are 5 gastric layers. In which layer does parietal cells locate? What about chief cell?

  • epithelium
  • glands
  • deeper glands
  • muscularis mucosa
  • submucosa
A
  • parietal cell

- chief cell

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2
Q

Q 2. What age population does polymyalgia rheumatica happen? What are symptoms? labs?
vs. fibromyalgia

A
  • polymyalgia rheumatica

- fibromyalgia

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3
Q

Q 3. Describe cross over study. washout period?

A

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4
Q

Q 4. Cavernous hemangioma: what are two subtypes? What is increased risk?
(Hint: FA 368)

A

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5
Q

Q 5. What hormones use cAMP as a second messenger system? what about IP3?
(FA 316)

A
  • cAMP

- IP3

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6
Q

Q 5. Growth hormone receptor uses what signaling pathway?

A

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7
Q

Q 5. Insulin binds to what receptor type? it uses what signaling pathway?

A

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8
Q

Q 6. Pathophysiology of Henoch-Schonlein purpura? treatment?

A

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9
Q

Q 7. Describe how mucosal immunity is developed

  • Which cell serves as antigen presenting cell
  • Antigen is presented to what cell, where is this cell located?
  • Which antibody is primarily produced? where does it travel to?
A

M cell- Macrophage: works as APC. It picks up antigen and present to B cells

B cell- meet antigen and undergoes activation at germinal center of peyer’s patch. Activated B cell becomes IgA secreting plasma cell.

IgA secreting plasma cell secretes IgA into gut lumen, where it serves to protect mucosa

IgA is PRIMARILY involved in mucosal immunity. This is the main humoral response after vaccine. (While live-attenuated vaccine responds more significantly than killed vaccine)

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10
Q

Q 7. Explain why selective IgA deficiency is usually asymptomatic

A

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11
Q

Q 8. List two reactions that utilize B12 as a cofactor. Deficiency of B12 can result in accumulation of what metabolites?

A

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12
Q

Q 8. Phenotypes of B12 deficiency (2)?

A

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13
Q

Q 8. B9 vs. B12

  • Both can cause what?
  • Deficiency of which is more common? why?
A

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14
Q

Q 9. Impaired tubular bicarbonate reabsorption may lead to what type of acidosis?
(Hint: think mnemonics)

A

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15
Q

Q 9. Describe how Von Gierke disease can cause lactic acidosis

A

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16
Q

Q 9. How aspiration pneumonia causes lactic acidosis? What type of acidosis is it?

A

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17
Q

Q 10. List two most susceptible locations (depending on supine vs. upright) of aspiration pneumonia

A

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18
Q

Q 10. What bacteria are dominant organisms that grown on aspiration pneumonia?

A

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19
Q

Q 11. Describe how obstructive sleep apnea causes pulmonary hypertension? What about systemic hypertension?

A
  • pulmonary HTN

- systemic HTN

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20
Q

Q 11. Difference between ventricular hypertrophy vs. hypertrophic cardiomyopathy?

A

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21
Q

Q 12. What is normal age that kids understand gender. Until what age do kids normally explore activities associated with opposite gender?

A

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22
Q

Q 13. QRS in ECG corresponds to what phase of ventricular myocyte action potential? which ion channel?

A

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23
Q

Q 13. QT interval in ECG correspond to duration of what phase of ventricular myocyte action potential? which ion channel?

A

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24
Q

Q 15. How beta blocker affect the level of renin? through what mechanism?

A

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25
Q

3 possible ways to stimulate renin release?

FA 540

A

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26
Q

Q 17. Gaucher disease: Which enzyme is deficient and what metabolite accumulates?

A

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27
Q

Q 22. What are three possible ways of transmission for HepB and HepD?

A

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28
Q

Q 22. What are two ways of transmission for HepA and HepE?

A

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29
Q

Q 22. compare serum anti-HBsAg IgG VS. serum anti-HBc IgG

A

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30
Q

Q 23. What is 99mTC-pertechnetate scan? What disease can it detect? why?

A

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31
Q

Q 24. What is purified protein derivative test?

A

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32
Q

Q 25. Two mechanism of action of digoxin. Explain how each mechanism can be used for different indication

A

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33
Q

Q 25. Digoxin side effects (5)? What antidote can be used?

A
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34
Q

Q 26. Dyslipidemia in T2DM: how levels change?

  • VLDL
  • TG
  • HDL
A
  • VLDL: high
  • TG:
  • HDL:
35
Q

Q 26. Apart from lab findings (Hb1Ac, fasting glucose, glucose tolerance), what physical exam finding can be used as an important predictor for insulin resistance?

A

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36
Q

Q 27. Ethics: patient with different language. What is doctor obligated to provide?

A

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37
Q

Q 29. What hep virus causes fulminant hepatitis? What is special feature of this virus?

A

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38
Q

Q 30. Diphenoxylate: Indication? what is mechanism of action? Name of another drug that act similar?

A

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39
Q

Q 32. Initial resistance to passive extension followed by sudden release of resistance. What is this phenomenon called? What neuronal dysfunction is related with this?

A

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40
Q

Q 34. Pathophysiology of endometrial hyperplasia/ adenocarcinoma in PCOS?

A

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41
Q

Q 35. What are clinical features of glucagonoma?

Hint: 5D- FA 332

A
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42
Q

Q 35. List 5 manifestations of Zn deficiency

A
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43
Q

Q 36. PT/PTT in TTP (Thrombotic thrombocytopenic purpura)? why?

A

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44
Q

Q 36. pathophysiology of sensory loss in TTP?

A

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45
Q

Q 38. Describe renal dysfunction in multiple myeloma

  • pathophysiology
  • abnormality in urinalysis
A

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46
Q

Q 38. In hypersensitivity interstitial nephritis, how would urine look?

A

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47
Q

How Waldenstrom macroglobulinemia is distinguished from multiple myeloma?
(FA 401)

A

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48
Q

Q 39. what medical conditions are commonly associated with nonbacterial thrombotic endocarditis? (4)

A

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49
Q

Q 39. Describe how scleroderma (systemic sclerosis) is associated with cardiac/pulmonary condition

A

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