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USMLE Online Practice Questions and Answers

Questions 4

A 22-year-old woman presents to her physician with amenorrhea, weight loss, anxiety, tremor, heat intolerance, and palpitations. Laboratory examination is consistent with hyperthyroidism, and the physician prescribes propylthiouracil. The patient's response to propylthiouracil is disappointing, and the symptoms recur, then worsen. Subtotal thyroidectomy is successfully performed, but following the surgery, the woman is extremely hoarse, and can barely speak above a whisper. This hoarseness is most probably related to damage to a branch which of the following cranial nerves?

A. Facial

B. Glossopharyngeal

C. Hypoglossal

D. Trigeminal

E. Vagus

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Questions 5

A 14-year-old boy is brought to the emergency department after being hit with a baseball bat on the lateral side of his leg immediately below the knee. He is unable to dorsiflex his foot. Which of the following nerves is most likely injured?

A. Common fibular (peroneal)

B. Femoral

C. Obturator

D. Sural

E. Tibial

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Questions 6

A study is designed to evaluate the feasibility of acupuncture in children with chronic headaches. Sixty children with chronic headaches are recruited for the study. In addition to their usual therapy, all children are treated with acupuncture three times a week for 2 months. Which of the following best describes this study design?

A. Case-control

B. Case series

C. Cross-sectional

D. Cross-sectional

E. Historical cohort

F. Randomized clinical trial

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Questions 7

A 12-year-old boy is brought to the physician by his mother because of a 1-month history of pain below the left knee. His mother says, "He can usually walk around, but he hasn't been able to play in any of his soccer games since this all began." Examination of the left knee shows warmth, swelling, and tenderness. An x-ray of the knee is shown. Which of the following structures is attached to the abnormal anterior tibial area?

A. Anterior cruciate ligament

B. Gastrocnemius muscle

C. Patellar ligament

D. Popliteus muscle

E. Posterior cruciate ligament

F. Soleus muscle

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Questions 8

A 19-year-old female is brought to the emergency department after she collapsed while jogging. She has a history of anorexia nervosa. When she regains consciousness, she says as she was jogging she became lightheaded, broke out into a sweat, and had palpitations. Her fingerstick glucose is 40 mg/dL. Her palpitations and diaphoresis were most likely caused by

A. ACTH

B. calcitonin

C. epinephrine

D. insulin

E. thyroxine

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Questions 9

Guillian-Barre is not linked to which of the following statements?

A. Infections often present.

B. Greater initial upper extremity deficits

C. Increased CSF protein levels

D. Hypertension

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Questions 10

A 42-year-old female comes to the emergency department with shortness of breath and palpitations. An ECG is obtained which reveals sustained ventricular arrhythmias which are found to be unresponsive to several medications. The attending physician finally prescribes bretylium. Bretylium works by

A. acting as a magnesium analog

B. blocking beta-1 receptors

C. blocking calcium channels

D. blocking potassium channels

E. blocking sodium channels

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Questions 11

Ovulation occurs during which of the following phases?

A. Menstrual

B. Secretory

C. Proliferative

D. Follicle

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Questions 12

Which of the following syndromes corresponds to: chromosomal deficit of #5?

A. Dubin-Johnson syndrome

B. Fanconi's syndrome

C. Edward's syndrome

D. Cri-du-chat syndrome

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Questions 13

Which of the following syndromes corresponds to: chromosomal deficit of #13?

A. Dubin-Johnson syndrome

B. Patau's syndrome

C. Edward's syndrome

D. Down syndrome

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Questions 14

The release of Angiotensin II causes which of the following to occur?

A. Increased filtration rate

B. Decreased glomerular hydrostatic pressure

C. Increase synthesis of Vitamin E

D. Increased release of erythropoietin

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Questions 15

The parents of a 7-year-old boy divorce. The boy lives with the mother and sees his father every-other weekend. During these visits, the boy is sullen and angry with the father, but when it is time to return home, he clings to the father and cries in a desperate manner while saying “I’m sorry! I want you and mom to live together again.” Which of the following is the most helpful statement that the father can make to the son?

A. “Big boys don't cry.”

B. “I left your mother, I didn't leave you.”

C. “I’ll see you in 2 weeks.”

D. “You’re the man of the house now.”

E. “Your mother was too hard to live with.”

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Questions 16

Which of the following matches the definition: attributing of our own unwanted trait onto another person?

A. Compensation

B. Projection

C. Rationalization

D. Dysphoria

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Questions 17

Which of the following is not considered a pyrimidine?

A. C

B. T

C. U

D. G

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Questions 18

Which of the following eye muscles rotates the eye upward and toward midline?

A. Inferior oblique

B. Superior oblique

C. Inferior rectus

D. Superior rectus

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Exam Code: USMLE
Exam Name: United States Medical Licensing Examination
Last Update: Mar 20, 2024
Questions: 622 Q&As

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