A 45 year old man is brought to the Emergency room after falling on his left arm.  X-rays indicate a mid-shaft fracture of the humerus.  He cannot supinate his forearm or extend the wrist joint.  Which nerve was most likely damaged by the fracture?

The medial meniscus of the knee is attached to medial (tibial) collateral ligament.

The ansa cervicalis provides muscular branches to all of the following muscles EXCEPT the _______.

The anterior tibial artery is accompanied along its course by the superficial peroneal nerve. 

The tentorium cerebelli separates the cerebrum from the cerebellum.

Identify the innervation to this muscle. 

A 60 yo, female truck driver comes in experiencing a sudden onset of pain in the lower, left leg. The left distal leg is cold and pale while the toes in the left foot are deeply cyanotic. The doctor feels a pulse in a posterior tibial artery; however no pulse in the dorsalis pedis artery. Pulse, temperature and color are normal in the right leg. The doctor suspects a clot. Where could this clot be located?

 Following a partial resection of a primary tumor of the tongue, a 76 yo man had no general sensation on the anterior 2/3 of the tongue.  Which of the following nerves was involved?

A physician assistant passed a large bore needle through the cricothyroid membrane while establishing an emergency airway. In doing the procedure, the tip of the needle was passed directly posterior in the midline of the neck. If pushed too far and through the laryngeal cavity, the needle would then be stopped by the first structure that the needle hit after piercing the cricothyroid membrane which would be the _____________.

A young child comes to your office with complains of a 2 week history of severe coughing.  You suspect that the child has pneumonia and order a chest x-ray.  While you notice bilateral infiltrates that are suggestive of pneumonia, you also notice an additional finding, a medium-size mass that lies in the superior mediastinum and extends to the anterior mediastinum.  The radiologist states it is a normal structure.  What is the structure?