Quiz 07/25/2022

A 32-year-old female with a history of schizophrenia is brought to the emergency room by her husband for acute psychosis. She receives a medication while in the emergency room to aid in her agitation. Soon after administration, the patient develops involuntary contractions of muscles of her face and neck. Which of the following medications was most likely administered to cause these symptoms?

On microscopic evaluation, which of the following is a classic finding present in the Parkinson-plus syndromes of both progressive supranuclear palsy and corticobasal degeneration, but not Parkinson’s disease?

This muscle biopsy is most consistent with which myopathic disease? 

What is the mechanism of action of pregabalin?

A 38-year-old man presents to the emergency room with a 2-month history of headaches, increased thirst, and decreased libido. CT scan of the head shows a suprasellar, partially calcified mass. An MRI was ordered thereafter and is shown below. What is the most likely diagnosis?

An MRI is ordered on a man with a known history of ischemic stroke and bilateral upper extremity weakness. Which of the following was the most likely cause of his ischemic injury?

The cell marked by the blue arrow is derived from which germ layer?

A 4-month-old infant of Amish parents is evaluated in the emergency department for an acute onset of weakness, poor feeding, and irritability that started 2 days ago. Neurologic examination of the child was impressive for ptosis, decreased tone, generalized weakness, a poor suck reflex, and mydriasis. MRI of the brain was normal. Which of the following is the most likely cause of the patient’s symptoms?

Which of the following vessels drains into the sigmoid sinus?

A 40-year-old textile worker is brought to the clinic for slowly progressive symptoms including shuffling gait, tremor, and profuse drooling. On examination, his speech is difficult to understand and there is cogwheel rigidity in his arms and legs. His tremor is most evident when his limbs are at rest. Exposure to which of the following is the most likely cause of the patients’ symptoms?