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USMLE Questions & Answers
What would the most appropriate therapy be? A 20-year-old female presents with a two-day history of dysuria and increased urinary frequency. She states that she was recently married and was not...
Ampicillin-the correct answer is a. the patients presentation is consistent with a simple urinary tract infection; there is a short history of dysuria, increased urinary frequency and the appearance of white blood cells and gram-negative rods in the
What did the lesion most likely involve? A patient experiences difficulty in walking downstairs and reports some double vision as well.
The correct answer to this question is C. Cranial nerve IV is used to look down and are in the medial position. The cranial nerve IV innervates the superior oblique muscle. If this cranial nerve is damaged on one side, double vision will occur, resul
Which of the following is the smallest active
functional unit (including conduction and air exchange) of the lung?
1. a respiratory bronchiolar unit -the smallest functional unit of the lung is the respiratory bronchiolar unit, which contains a respiratory bronchiole and the alveoli associated with it. this unit allows for air conduction and gas exchange. the alv
Which of the following excites the polar regions of the muscle spindle?
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1. gamma motor neurons -gamma motor neurons innervate the polar regions of the muscle spindle and, when excited, cause resetting of the spindle by stretching it, resulting in a lowering of the threshold for activation of that receptor by an external
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Questions: 25 | Attempts: 273
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Sample QuestionOne of three blood culture bottles drawn from a patient with unexplained fevers reveals gram-positive cocci growing in clusters. Which of the following tests would be most useful in determining whether this organism is a part of the normal skin flora?
Questions: 25 | Attempts: 146
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Sample QuestionA 28-year-old male intravenous drug user presents with a febrile illness that has lasted 2 weeks. He also complains of chills, weakness, dyspnea, cough, arthralgia, diarrhea, and abdominal pain. On examination, a heart murmur is present, and small, tender nodules are found on the finger and toe pads, along with small hemorrhages on the palms and soles. Three sets of blood cultures are obtained from different veins. While awaiting laboratory confirmation, an empiric antibiotic regimen should primarily be directed at which of the following organisms?
46 Questions Block for the USMLE Step 2.
Questions: 2 | Attempts: 128
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Sample QuestionA 70 year old man presents with a past medical history of coronary artery disease, hypertension, and a 25 pack year smoking history presents to your clinic with fatigue. He has had his yearly colonscopy and prostate examination which were both negative. His medications include aspirin, lisinopril, and metoprolol. Vital signs are 37.0C, blood pressure 130/84, heart rate 60/min, and respiratory rate of 12/min. He is a thin elderly gentleman with a benign cardiovascular and chest exam. His abdomen is soft, nontender, and nondistended, but there is a pulsitile mass approximately 2 cm superior to the umbilicus in the midline. Which of the following creates the highest risk for rupture?
This is a block of 46 questions of MCQ type with images in some questions. Choose the best answer for each question and get explanation at the end of exam when you submit. Time permitted is 1 hour.
Questions: 20 | Attempts: 118
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Sample QuestionA peripheral blood smear shows normocytic, normochromic red blood cells. The other cell types are morphologically normal but reduced in number as well. Bone marrow biopsy in this patient would most likely show which of the following patterns?
Questions: 25 | Attempts: 93
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Sample QuestionA baby born at 32 weeks gestation with Apgar scores of 2 and 7 was placed in the neonatal intensive care unit. She developed a fever and leukocytosis; lumbar puncture revealed pleocytosis with increased protein, decreased glucose, and gram-positive rods. Which one of the following organisms was most likely isolated from the CSF?
For those of you who love all things biology and living organisms especially anatomy and how features work in the human body then this is the quiz for you. If you are prepared to test your knowledge, try it out.
Questions: 50 | Attempts: 71
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Sample Question. The secondary oocyte enters the second meiotic division and proceeds as far as metaphase. Which of the following is the stimulus required for continuation of the second meiotic division to produce the haploid ovum?
Questions: 48 | Attempts: 70
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Sample QuestionAn oncologist recently discovered that certain cancerous cells secrete a protein named ca- 1panc. Using this protein, he developed a new blood test to detect this type of cancer. He performed the blood test on 1,000 patients. One hundred of these patients had the cancer, and the test came back positive for 60 of them, while for the remaining 40 patients the test was negative. Nine hundred of the patients did not have the cancer; however, the test was positive for 100 of them. In the remaining 800, the test came back negative. Which of the following numbers represents how well the test identifi ed those who had the cancer?
Questions: 25 | Attempts: 63
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Sample QuestionAn Hispanic male is referred to the dermatology clinic of a major medical center. On physical examination, the man has several disfiguring lesions on his face and there is loss of cutaneous sensation to fine touch, pain, and temperature. An acid-fast organism is observed in scrapings from a skin lesion. Which of the following organisms is the most likely cause of this patient's disease?
Questions: 23 | Attempts: 55
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Sample QuestionA 1-year-old child develops voluminous watery diarrhea and vomiting. She is brought to the pediatrician by her parents and evaluated, then sent home with instructions for the parents to give the child an electrolyte replacement solution. Which of the following viruses is the most likely cause of the child's diarrhea?
Questions: 25 | Attempts: 47
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Sample QuestionA 33-year-old man in Arkansas presents to the local clinic with fever, chills, headache, and generalized myalgias and arthralgias. On physical examination, an ulcer with a black base is apparent on his right hand, and epitrochlear lymphadenopathy is noted. A careful history reveals that the man is a hunter and trapper, recently trapping and skinning rabbits. Which of the following organisms is the most likely cause of this man's illness?
Questions: 25 | Attempts: 46
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Sample QuestionAn 8-year-old boy is taken to a pediatrician because of behavioral changes, mild intellectual deterioration, and "laziness." Over the next several months the boy develops increasing clumsiness and periodic, involuntary, jerky movements every 3 to 6 seconds. Visual deterioration is apparent upon visual field testing, and optic atrophy is evident on funduscopic examination. Cerebrospinal fluid studies do not show significant pleocytosis, but oligoclonal bands of IgG are present on CSF electrophoresis. The electroencephalogram shows periodic discharges that are synchronous with the periods of myoclonus. Computed tomography (CT) of the head shows low-density white matter lesions and cerebral atrophy. At the age of 10, the boy dies. Prior infection with which of the following agents was probably related to the patient's condition?
Questions from various sources for practicing
Questions: 18 | Attempts: 45
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Sample QuestionJohn is a 57-year-old man who has always been a very heavy drinker, often consuming 2 pints of whiskey per day, for many years. Upon the urging of his wife, he decided to seek medical attention for help with problems with his gait, which has steadily worsened over the past several months. He noticed that he now needed to stand with his feet far apart in order to maintain his balance and that he waddled when he walked. The doctor who evaluated him tested his memory and speech carefully, as well as his cranial nerves, and was unable to find any deficits. There was no weakness, sensory loss, or abnormalities in his reflexes. When asked to touch the doctor's finger, then his nose, John missed his nose slightly, but rapidly corrected the movement on both sides. When asked to slide his right heel down his left shin, his heel slid sideways and clumsily across the bone until it reached his ankle. The response with the left heel was similar. When asked to walk, John walked with his feet very far apart. If he attempted to walk in a tandem fashion, with one heel in front of the other toe, he began to fall, and the doctor needed to catch him. The doctor ordered an magnetic resonance imaging (MRI) of John's head. The region of the affected area is associated with which functional division of the cerebellum?
Questions from various sources for practicing
Questions: 50 | Attempts: 45
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Sample QuestionA lesion at which site in the diagram below could produce weakness of muscles that mediate swallowing, chewing, breathing, and speaking?
Questions: 23 | Attempts: 44
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Sample QuestionA 20-year-old man arrives at the emergency room asking for a strong pair killer because he is in serious pain. The attending physician notices that he is very anxious and is sweating. The man states that he has no appetite and has a runny nose, nausea, stomach cramps, and diarrhea. He said that he took his temperature at home, which was 100°Fahrenheit. While he talks, he yawns and appears constantly restless. The attending physician recognizes that he is abusing a certain substance and is experiencing withdrawal. Which substance is it?
Questions: 25 | Attempts: 43
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Sample QuestionA 55-year-old man returns from a vacation to the beach. While on vacation, he and his family consumed several meals consisting primarily of seafood, including lobster and raw oysters. Although the other members of his family did not get sick, he developed a bullous rash over his lower extremities, hypotension, and confusion. His past medical history is significant for liver disease and alcoholism. The most likely cause of this man's signs and symptoms is
Questions: 25 | Attempts: 43
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Sample QuestionWhich of the following is a feature of gram-positive bacteria rather than gram-negative bacteria?
Questions from various sources for practicing
Questions: 20 | Attempts: 39
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Sample QuestionBenign prostatic hypertrophy results in obstruction of the urinary tract. This specific condition is associated with enlargement of which of the following?
Questions from various sources for practicing
Questions: 50 | Attempts: 38
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Sample QuestionThe structures labeled in the figure with an asterisk produce which of the following substances?
Biology and living organisms are interesting part of nature which are fascinating to study. If you are prepared to test your knowledge, this quiz will help you understand this part of nature even better, try it out.
Questions: 50 | Attempts: 32
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Sample Question. A 55-year-old woman presents with pain in her right hip and thigh. The pain started approximately six months ago and is a deep ache that worsens when she stands or walks. Your examination reveals increased warmth over the right thigh. The only laboratory abnormalities are alkaline phosphatase 656 IU/L (normal 23 to 110 IU/L), elevated 24-h urine hydroxyproline, and osteocalcin 13 ng/mL (normal 6 ng/mL). X-ray of hips and pelvis shows osteolytic lesions and regions with excessive osteoblastic activity. Bone scan shows significant uptake in the right proximal femur. Which of the following should you include in your differential diagnosis?
Questions: 20 | Attempts: 31
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Sample QuestionA 57-y/o man is brought to the emergencydepartment because of blurry vision, difficulty standing, and mental confusion. On physical examination the patient appears malnourished, he had diffuse crackles bilaterally, and on standing his gait is wide-based and unsteady. The patient’s friend, who accompanies him, says the patient “hasn’t been himself lately,” and is having difficulty remembering to do everyday tasks. Which neuropathologic findings are most consistent with this patient’s symptoms?
Studying for the COMLEX 3 and going to start writing questions
Questions: 8 | Attempts: 30
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Sample QuestionA 42 year old man with a 20 year hx of Type I DM presents with a dime-sized ulcer on the plantar surface of his left foot. On physical exam you notice a swollen area around the wound that is tender and red. An initial X-ray exam demonstrates no periosteal elevation in any parts of the left lower extremity. What is the next step in the managment of this man's problem?
Questions from various sources for practicing
Questions: 50 | Attempts: 28
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Sample Question. A patient is capable of displaying pupillary constriction during an accommodation reaction but not in response to a direct-light stimulus. The lesion is most likely present in which of the following
Questions from various sources for practicing
Questions: 50 | Attempts: 28
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Sample QuestionThe process of unlocking the fully extended knee in preparation for flexion requires initial contraction of which of the following muscles?
For those of you who love all things biology and living organisms especially anatomy and how stuff works in the human body then, USMLE Step 1 Qs (9 is for you. If you are prepared to test your knowledge try it out.
Questions: 50 | Attempts: 24
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Sample QuestionEmma is a 64-year-old woman who has had heart disease for many years. While carrying chemicals down the stairs of the dry-cleaning shop where she worked, she suddenly lost control of her right leg and arm. She fell down the stairs and was able to stand up with some assistance from a coworker. When attempting to walk on her own, she had a very unsteady gait, with a tendency to fall to the right side. Her supervisor asked her if she was all right, and noticed that her speech was very slurred when she tried to answer. He called an ambulance to take her to the nearest hospital. The physician who was called to see Emma in the emergency room noted that her speech was slurred as if she were intoxicated, but the grammar and meaning were intact. Her face appeared symmetric, but when asked to protrude her tongue, it deviated toward the left. She was unable to tell if her right toe was moved up or down by the physician when she closed her eyes, and she couldn't feel the buzz of a tuning fork on her right arm and leg. In addition, her right arm and leg were markedly weak. The physician could find no other abnormalities on the remainder of Emma's general medical examination. Where in the nervous system could a lesion occur that causes arm and leg weakness, but spares the face?
Questions from various sources for practicing
Questions: 50 | Attempts: 22
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Sample QuestionThe proper sensory nucleus is derived from which of the following
Questions from various sources for practicing
Questions: 50 | Attempts: 22
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Sample Question. The accompanying diagram shows a cross section of a developing human endometrium and myometrium. Hormonal ratios control the development of which of the labeled vessels?
Directions: Each of the numbered items or
incomplete statements in this section is followed by answers or by completions
of the statement. Select the ONE lettered answer or completion that is BEST in
each case.
Questions: 75 | Attempts: 21
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Sample QuestionA 17-year-old male was placed on carbamazepine therapy by his neurologist to control newly developed seizures of unknown etiology. The patient was also recently given a macrolide antibiotic by his family physician for a presumed “walking pneumonia.” Halfway through his antibiotic course, the patient again developed seizures. What could account for this new seizure activity?
Questions from various sources for practicing
Questions: 50 | Attempts: 15
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Sample QuestionA 55-year-old female patient is admitted to the hospital for treatment of hypertension. Which of the following drugs is most appropriate to treat this disorder?
Questions: 48 | Attempts: 6
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Sample QuestionA new patient presents to a clinic in Denver, Colorado with complaints of dyspnea and fatigue on exertion. On history, the patient informs the doctor that she just moved from the California coastline less than 1 week ago, and has been attempting to do her 3-mile run every morning. The patient is told to limit her running until her body adjusts to the new altitude. Which of the following will occur in this woman’sbody in response to the high altitude?
