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NBME 15 Answers

Block 1/Question#6
A 7-year-old boy is brought to the physician because of a ...
Virion release

Block 1/Question#9
A healthy 3-year-old boy has a cleft lip and palate. He has ...
Multifactorial

Block 1/Question#10
Which of the following best explains why deoxygenated blood ...
Deoxyhemoglobin is a better buffer of hydrogen ions than oxyhemoglobin

Block 1/Question#11
A 9-year-old boy has mild mental retardation and a 4-year ...
Tuberous sclerosis

Block 1/Question#15
A 48-year-old woman comes to the emergency department because ...
Increased cardiac parasympathetic activity

Block 1/Question#19
A 65-year-old man with a history of ischemic heart disease ...
33%

Block 1/Question#24
A 3-year-old girl is brought to the physician because of a ...
Interferon-gamma receptor

Block 1/Question#32
A 4-day-old male newborn who was born at home is brought to ...
First

Block 1/Question#33
A 75-year-old woman is brought to the physician because of a ...
Releases NF-κB after undergoing phosphorylation

Block 1/Question#35
One-half hour after an uncomplicated vaginal delivery, a ...
Oxytocin

Block 1/Question#37
A 36-year-old man who is heterozygous for an LDL-receptor ...
LDL receptor

Block 1/Question#38
A 23-year-old woman comes to the physician because of a 3-day ...
Oculomotor nerve

Block 1/Question#39
An investigator is designing a study to compare a new ...
Stratification

Block 1/Question#44
A 59-year-old man comes to the physician because of a 10-day ...
Imatinib

Block 1/Question#46
A 6-year-old boy with severe mental retardation and ...
0.2 to 0.5

Block 1/Question#48
A 22-year-old man is brought to the emergency department 30 ...
Deep fibular (peroneal)

Block 1/Question#49
A 23-year-old woman comes to the physician because of a ...
Glucokinase

Block 1/Question#50
A healthy 25-year-old man participates in a study of muscle ...
epp Amplitude: 1; mepp Amplitude: 1; Response to Ach: 1

Block 2/Question#3
A 2-year-old girl is brought to the emergency department 20 ...
Atropine

Block 2/Question#4
A 32-year-old man comes to the physician for his annual ...
Schizoid personality disorder

Block 2/Question#6
A 56-year-old woman comes to the physician because of a ...
Helicobacter pylori

Block 2/Question#9
A 67-year-old man is brought to the physician because of a ...
Aneurysm of the posterior communicating artery

Block 2/Question#11
A previously healthy 48-year-old man is brought to the ...
Degenerating epithelial cells and dirty brown granular casts

Block 2/Question#14
A 25-year-old woman with a history of rheumatic fever and ...
Streptococcus mitis

Block 2/Question#15
A 64-year-old man comes to the physician because of a 2-month ...
Increased fibrosis in the interstitium

Block 2/Question#20
A 30-year-old man is brought to the physician by his wife ...
Porphobilinogen deaminase

Block 2/Question#21
A 43-year-old woman comes to the physician because of a ...
Complex partial

Block 2/Question#22
A 22-year-old woman is found to be HIV positive after sexual ...
Protein processing

Block 2/Question#23
A previous healthy 26-year-old woman comes to the physician ...
Area labeled by letter 'E'

Block 2/Question#26
A 47-year-old man is admitted to the hospital for treatment ...
Increased pulmonary capillary pressure

Block 2/Question#28
A 35-year-old woman, gravida 1, para 1, comes to the ...
Nicotinic acetylcholine receptor

Block 2/Question#29
A 2-month-old male infant is brought to the emergency ...
Glycine receptor

Block 2/Question#31
A 24-year-old woman with Marfan syndrome comes to the ...
Hypervolemia

Block 2/Question#32
A 25-year-old primigravid woman at 25 weeks' gestation comes ...
Prematurity

Block 2/Question#36
A 72-year-old woman is admitted to the hospital because of an ...
Left coronary, circumflex, posterior interventricular (posterior descending)

Block 2/Question#39
A 43-year-old man with a 10-year history of alcoholism comes ...
Decreased glutathione

Block 2/Question#40
A 4-year-old boy is brought to the physician by his father ...
Cytoskeleton

Block 2/Question#41
A 45-year-old man comes to the physician for an initial ...
Mitral regurgitation

Block 2/Question#43
A 37-year-old woman is brought to the emergency department ...
Cardiogenic

Block 2/Question#45
A 3-year-old girl is brought to the physician because of a ...
Abnormal targeting of these enzymes to lysosomes

Block 2/Question#47
A 75-year-old man with chronic obstructive pulmonary disease ...
C5a

Block 2/Question#49
A study was begun in the 1950s to determine the causes of ...
Cohort study

Block 3/Question#3
A 56-year-old woman is brought to the emergency department by ...
Lipopolysaccharide

Block 3/Question#6
A 50-year-old man comes to the physician for a routine health ...
Medullary

Block 3/Question#7
A 1-year-old boy is brought to the physician by his parents ...
RNA splice error

Block 3/Question#9
A newborn undergoes surgical repair of esophageal atresia. ...
Endoderm

Block 3/Question#10
A 5-year-old boy is stung on his foot by a bee. Within 30 ...
Gap formation between endothelial cells

Block 3/Question#15
A 65-year-old man with hypertension volunteers to participate ...
Acid-base: Metabolic alkalosis; Volume contraction: yes

Block 3/Question#18
A 27-year-old man comes to the physician because of a 3-hour ...
Prolonged fecal excretion of the organism

Block 3/Question#24
A 28-year-old African American man comes to the physician ...
Ethnicity

Block 3/Question#30
A 13-year-old boy is scheduled to receive chemotherapy for a ...
T-lymphocyte thymocytes localized to the thymic cortex

Block 3/Question#32
A 2-month-old girl is brought to the physician for a ...
Congenital neutropenia

Block 3/Question#39
A 42-year-old woman with multiple sclerosis is brought to the ...
Medial longitudinal fasciculus

Block 3/Question#43
An 18-year-old man is brought to the physician by his father ...
Inquiry about a history of anabolic steroid use

Block 3/Question#45
A 30-year-old woman has had Hodgkin disease that was ...
Therapy for Hodgkin disease causes mutations in hematopoietic stem cells, and one mutant cell progresses to leukemia

Block 3/Question#47
A 2-month-old boy is brought to the physician because of ...
Peroxisomes

Block 3/Question#48
A paper says, "We chose the sample size to have an 80% power ...
5%, Type I error

Block 4/Question#3
A 51-year-old man with a 5-year history of Wegener ...
Hematuria

Block 4/Question#5
A male newborn is delivered at term with a right-sided aortic ...
Third and fourth branchial pouches

Block 4/Question#7
A 17-year-old boy with chronic renal insufficiency undergoes ...
Hydronephrosis

Block 4/Question#8
A newborn delivered at 28 weeks' gestation is in severe ...
Lung elastic recoil

Block 4/Question#9
A 40-year-old woman with breast cancer is brought to the ...
Occipital lobe

Block 4/Question#11
A 45-year-old man comes to the physician for a follow-up ...
Venous return: decreased; Carotid sinus baroreceptor activity: decreased; Cerebral blood flow: decreased

Block 4/Question#17
A previously healthy 18-year-old woman comes to the physician ...
β-Lactamase production

Block 4/Question#20
A 52-year-old man is brought to the physician 3 days after ...
No constriction because the retinal ganglion cells in the left eye have been destroyed

Block 4/Question#25
A couple has two children with osteogenesis imperfecta type ...
Germline mosaicism

Block 4/Question#26
A 65-year-old woman comes to the physician for a follow-up ...
Osteoblast activity: decreased; Osteoclast activity: increased; RANKL: increased

Block 4/Question#29
A 45-year-old woman (III,7) comes to the physician for a ...
Incomplete penetrance

Block 4/Question#30
A 25-year-old woman comes to the physician because of ...
Nuclear/retinoid X binding to DNA

Block 4/Question#32
A 70-year-old woman is found dead in her bed in a skilled ...
Hypertrophy

Block 4/Question#33
During a series of normal skeletal muscle twitches, the ATP ...
ATP is quickly regenerated from creatine phosphate

Block 4/Question#38
A 25-year-old woman comes to the physician because of general ...
Thrombocytopenia

Block 4/Question#40
An 18-month-old boy with severe combined immunodeficiency ...
Irradiated packed red blood cells

Block 4/Question#42
A 4-year-old boy with a karyotype of 47,XY+21 develops ...
Excess lymphoblasts

Block 4/Question#44
A 72-year-old woman comes to the physician because of diffuse ...
Osteomalacia

Block 4/Question#47
A 31-year-old woman is treated for Plasmodium vivax malaria ...
Primaquine kills hypnozoites

Block 4/Question#48
A study is conducted to evaluate the effectiveness of cough ...
Lack of blinding between groups

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