This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, larynx and trachea and cranial nerves 3,4,6, Subject name: Anatomy
A person is brought to an emergency depament after he experiences a sudden difficulty in breathing and a low tracheostomy is performed below the isthmus of the thyroid, which of the following vessels may be encountered? 
Select and explain. 
A. Inferior thyroid aery, B. Inferior thyroid vein, C. Costocervical trunk, D. Superior thyroid aery
B: Inferior thyroid vein
Answer: B: Inferior thyroid vein 
Explanation: A low tracheostomy is a surgical incision of the trachea through the neck and below the isthmus of the thyroid gland. The Inferior thyroid veins drain the thyroid gland, descend in front of the trachea, and enter the brachiocephalic veins.