Nokea
A 6-year-old child complains of bilateral thigh pain, motor weakness, and some sensory deficits of both lower limbs; he has a history of bladder dysfunction over the past 2 weeks; MRI of the spinal cord shows a mass arising from the filum terminale and conus medullaris causing some pressure effect. A CNS tumor is suspected. Which of the following tumor is MOST likely arising in such site?
- A. medulloblastoma
- B. anaplastic astrocytoma
- C. myxopapillary ependymoma
- D. choroid plexus carcinoma
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
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- A. 1 to 5¼g/dL
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- C. 10 to 15¼g/dL
- D. 15 to 20¼g/dL
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Which of the following is the function of macrophages and neutrophils?
- A. Phagocytosis
- B. Complement fixation
- C. Antibody production
- D. Suppression of autoimmunity
Correct Answer: A
Rationale: The function of macrophages and neutrophils is primarily phagocytosis, which is the process of engulfing and digesting pathogens such as bacteria, virus-infected cells, and cellular debris. Phagocytosis is a crucial defense mechanism of the immune system as it helps eliminate harmful invaders and promote tissue repair. Macrophages and neutrophils play key roles in innate immunity by recognizing, ingesting, and destroying pathogens to protect the body from infections.
The MOST common cause of sleeping difficulty in the first 2 months of life is
- A. gastroesophageal reflux
- B. colic
- C. formula intolerance
- D. developmentally self-resolving sleeping behavior
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Child sexual abuse is the involvement of children in sexual activities that violates societal taboos. Most perpetrators are adults or adolescents who are known to the child and who have real or perceived power over the child. Of the following, perpetrators who are LESS often involved in child sexual abuse are
- A. fathers
- B. mothers
- C. teachers
- D. family friends
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Iron chelating agents are used for treatment of:
- A. Leukemia
- B. Lymphoma
- C. Wilms tumor
- D. Chronic hemolytic anemia
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.