NBME exam

Question 1

If you cut obturator nerve, what muscle is paralyzed?

Answer 1

adductor brevis

Question 2

What failed to fuse if the newborn has a tuft of hair in the lumbar spine with lack of spinous processes?

Answer 2

fusion of sclerotomes

Question 3

What vein takes tumour cells from the breast to the thoracic vertebrae?

Answer 3

intercostal

Question 4

which beta blocker causes prolonged QT?

Answer 4

sotalol

Question 5

what is lice called?

Answer 5

pediculus humanus capitis

Question 6

how do hmg coa reductase inhibitors work?

Answer 6

increase LDL receptors on the hepatocytes

Question 7

how does E coli become resistant to ciprofloxacin?

Answer 7

alternation in DNA gyrase

Question 8

what does histamine cause?

Answer 8

increased lymph flow

Question 9

which chemotherapy is most likely to cause bilateral intersititial alveolar edema and bilateral pleural effusions?

Answer 9

doxorubicin

Question 10

what does pulmonary capillary wedge pressure measure?

Answer 10

left atrial pressure

Question 11

in SIADH, is your urine osmolality more or less than plasma?

Answer 11

MORE

Question 12

If someone with myocardial infarction become hypotensive, what will cause swelling of parenchymal cells in vital organs within minutes?

Answer 12

decreased intracellular ATP concentrations

Question 13

pufferfish tetrodotoxin blocks what type of channels causing tingling around lips and mouth

Answer 13

sodium

Question 14

blood pressure cuff inflated then released, blood flow increases temporarily then normalizes, what humoral substance is responsible for this?

Answer 14

adenosine

Question 15

what does the tetanus toxin bind to?

Answer 15

synaptobrevin

Question 16

if your glucose doesn’t go up after glycerol or fructose, but does after galactose then you have a defect in what liver metabolic pathway?

Answer 16

gluconeogenesis

Question 17

what virus can’t form plaques when dried or exposed to ph of 5?

Answer 17

coronavirus

Question 18

what is the p value calculated from the chi square test?

Answer 18

0.05<p></p>

Question 19

immobolization after fracture is most likely to cause?

Answer 19

decreased blood volume

Question 20

The atypical lymphocytes seen in EBV are what types of cells?

Answer 20

CD8+ T lymphocytes

Question 21

what complication can you get with pneumothorax?

Answer 21

respiratory acidosis

Question 22

right sided hearing loss and mass cerebellopontine angle?

Answer 22

neural crest cells

Question 23

what do pineal tumours cause?

Answer 23

parinauds syndrome (paralysis of upward gaze), headaches because pressing on third ventricule outlet, nausea, vomiting

Question 24

what bug causes food poisoning with raw oysters?

Answer 24

vibrio parahaemolyticus

Question 25

why is the Cr clearance test less good than inulin for estimating GFR?

Answer 25

because cr is secreted by the proximal tubule

Question 26

what is alpha?

Answer 26

type 1 error- reject the null hypothesis when its true-when you think theres a difference but there isnt

Question 27

what is beta

Answer 27

probability of type 2 error, when you accept null and think theres no difference, but there is a difference