Q- Which one of the following cells is derived from monocytes and lying within the alveoli? A- Clara cells B- K cells C- Macrophages D- Pneumocytes type I E- Pneumocytes type II Q- Which one of the following cells lines the alveoli and secretes the surfactant? A- Clara cells B- K cells C- Macrophages D- […]
anatomy
Repeated USMLE Questions Step 1- 311
A 32-year-old man visits his physician for a follow up after receiving a punch to the right side of his face. He complains of difficulty to chew food on the right side. Examination reveals possible injury to muscles of mastication. Muscles of mastication are derived form which of these structures? A-Branchial Arch 1 B-Branchial Arch […]
Repeated USMLE Questions Step 1- 309
An Acrobat player fell from a height of about 30 feet on her back during her performance and sustained a serious injury. Her thoracic and abdominal muscles are completely paralyzed. She is still able to breathe as the diaphragm is not paralyzed by this injury. What is the most likely level of her injury? A-Second […]
Repeated USMLE Questions Step 1- 300
A 45-year-old woman working as a secretary visits her physician complaining of tingling and numbness in her hands. Upon conducting a physical examination, the doctor finds that the patient also has decreased sensation in all her fingers, except for the fifth digit. Keeping these in mind, which of the following muscles is usually weakened in […]
Medical Question of the Day- 45
A 20-year-old male athlete complains of pain and weakness of his right arm. He had a successful surgery on his knee last week. He has been walking with the aid of crutches since then. On examination, he is unable to extend his right arm at the elbow or the hand at the wrist. There is […]
USMLE Step 1- Quiz 2
A 28-year-old man has a minor injury as a result of motor car accident. He complains of severe pain due to a scratch on his scalp across the front hairline. Which one of these nerves is related to this pain? A-Trigeminal nerve B-Facial nerve C-Vagus nerve D-Oculomotor nerve E-Orbital nerve A 74-year-old man presents to […]