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NBME Questions and Answers (Q&A)

The correct answer to this question is E, suppression. This act is in psycology, which is stopping oneself from feeling or thinking something. Supression could also refer to the act of holding back something, like supressing hunger pains by not eating. This act is highly ineffective because...Read More

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The correct answer to this question is D, pulmonary edema. When excess fluid builds in the lungs, this condition occurs. The built up fluid makes it difficult to breathe. There are about 200,000 cases of pulmonary edema a year. This condition is caused by many factors including heart problems,...Read More

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Lithium can cause nephrogenic DI. I think this only affects the late distal tubules and collecting ducts, the rest of the nephron wouldn't be affected.

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The correct answer to this question is B, loss of heterozygosity. This is the loss of a chromosomal event, which results in the loss of an entire gene and the chromosomal region around it. Loss of heterozygosity is common in cancer. It indicates that the tumor supressor gene is...Read More

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The correct answer is option E
Variable expressivity best explains the finding in the boy and the mother in the question above. Variable expressivity occurs when a phenotype is expressed to a different degree among individuals that have the same genotype. It refers to the range of s...
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The correct answer is option D
The most likely cause of this man’s decrease in muscle size is the increase in protein degradation. Muscle atrophy is when a muscle appears smaller than it used to be. It is the shrinkage of muscle fibers. It is mostly caused by lack of physic...
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Prior to his death, this man may have had a gait ataxia. This basically means he couldn’t walk a straight line. He’s a 15-year alcoholic who’s having a period of sobriety due to his medications. He may have also had an essential tremor (answer C) since he’s sobering up....Read More

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The correct answer is option C
Middle cerebral artery is the most likely artery involved in this patient’s condition. The middle cerebral artery is the longest cerebral artery and it is the most commonly affected artery in the brain during a cardiovascular accident. The middle...
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There are so many choices for this question that it can be very confusing but the answer is J. Ventricular Septal Defect is a problem that occurs in the ventricular septum. This is the area that is in between the left and right ventricles of the heart. The opening that is present in the a...Read More

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I would have to go with E for this question. It is evident that the patient has gotten the trait from his father’s side of the family since the father and his father’s sister has also shown the same symptoms because of the presence of chromosome 15q11-q13. Pseudominant inheri...Read More

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