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A patient presents with right-sided jaw weakness and numbness over the right cheek and jaw. He reports difficulty chewing and a tingling sensation in the same distribution. Which nerve is most likely affected?

The sphenoidal fontanelle is found between which bones?

Which cranimetric point marks the region where the frontal, parietal, temporal, and sphenoid bones meet?

A patient presents with excessive thirst and difficulty regulating body temperature. Imaging reveals a mass compressing the hypothalamus. Which larger brain division contains the hypothalamus?

A 68-year-old man presents with bradykinesia, resting tremor, and postural instability. MRI reveals loss of dopaminergic neurons in the substantia nigra. Which brain region contains the substantia nigra?

A 45-year-old woman presents with sudden weakness on the right side of her face. She is unable to close her right eye or smile on that side. She also reports increased sensitivity to sound in her right ear. Examination confirms facial droop involving both the forehead and lower face on the right side. Which cranial nerve is most likely affected?

A 70-year-old man presents with sudden right-sided weakness and expressive aphasia. CT angiography shows occlusion of the left middle cerebral artery. This artery is part of which circulation, and which cerebral lobe is primarily affected?

A patient is asked to stick out his tongue, and it deviates to the right side. At rest, the right side of the tongue appears atrophied. Which cranial nerve is damaged?

During a neurosurgical procedure, a surgeon separates the dura mater to access a region of the brain. Between which two meningeal layers does cerebrospinal fluid normally circulate?

A 6-year-old boy presents with headache, nausea, and papilledema. MRI reveals enlargement of the lateral and third ventricles, but the fourth ventricle appears normal. Which of the following structures is most likely obstructed?