Briefly describe the main components of the cerebral anastomosing circle (of Willis).

A 25-year old man is involved in an automobile accident and slams his head into a concrete wall of a bridge. His CT scan reveals that the middle meningeal artery has ruptured but the meninges remain intact. Blood leaking from this artery enters which of the following spaces?

What type of cell signaling occurs through the extracellular matrix to nearby target cells?

Most of the water found in the body is in the ________.

Which of the following foramen would be located within the posterior cranial fossa?

What specific cranial nerve provides motor innervation to the tensor tympani muscle of the ear?

The external laryngeal nerve typically innervates which of the following muscles of the larynx?

A woman has difficulty breathing through her nose. On examination, you find that there is a swelling of the mucous membranes of the superior nasal meatus. Which opening of the paranasal sinuses is most likely blocked?

You ask a patient to stick out his tongue and it deviates to the left. What nerve is probably damaged?

A 67-year-old woman comes in complaining of tunnel vision. Her MRI scan shows an enlarged pituitary gland that lies in the sella turcica. What structure nearby structure is damaged?