Exam 1: Anatomy

A 16-year-old previously healthy man is admitted to the emergency department due to a stab at the thorax. On examination, the patient is not conscious. The patient's blood pressure is 90/60 and the pulse is 120/min. The physical examination shows an anterior stab wound lateral to the sternum, at the level of the fourth intercostal space. Which of the following structures is most likely to have been injured in this patient?

A 64-year-old lady is sent to the emergency room with stroke-like symptoms. The patient has a history of transient ischemic events as well as other cerebrovascular disease risk factors such as hypertension, type 2 diabetes, and hyperlipidemia. Urgent brain imaging demonstrates vascular blockage, as indicated by the arrow in the illustration. Which of the following findings is most likely to be observed in this patient?

A 63-year-old man was admitted to the emergency department complaining of a 5-day history of right upper quadrant abdominal pain associated with nausea and vomiting. The patient has a history of hereditary hypercoagulability. On examination, the patient has right upper quadrant tenderness. Laboratory workup shows elevated AST and ALT. Negative hepatitis tests. A computed tomography scan of the abdomen shows a thrombus in the hepatic artery. The patient is scheduled to undergo percutaneous angiography of the hepatic artery. Contrast administration into which of the following structures is most likely to enhance the targeted artery?

A 56-year-old woman presented to the office due to a feeling of heaviness in her left face. Her husband has noticed that the left side of her face is drooping. The patient has been diagnosed with Sarcoidosis last year. On examination, the face is asymmetric, with the inability to puff out her cheeks. She is unable to close he eyes fully. Otherwise, the neurological examination is normal without any other deficits. Which of the following is an additional finding in this patient?

A 42-year-old woman presented to the office with right upper arm weakness. She has had chronic neck pain for the past 5 years. She has no prior medical or surgical history. Physical examination shows loss of the reflex demonstrated in the image. Radiological imaging shows degenerative changes compressing the spinal cord. Which of the following spinal cord segments is most likely affected?