UPDATED ACTUAL Exam Questions and
CORRECT Answers
What is the thyroid deep to - CORRECT ANSWER - - superficial investing fascia
- platysma
- fascia of infrahyoid muscles
- infrahyoid muscles (sternohyoid, sternothyroid)
- pre-tracheal fascia
- fibrous capsule of thyroid
vertebral landmark of thyroid - CORRECT ANSWER - C5-T1
What is deep to the thyroid - CORRECT ANSWER - trachea
isthmus of thyroid gland - CORRECT ANSWER - middle of thyroid gland that covers
some of the ventral portion of the trachea, connects the left and right lobes of the thyroid
two main arteries of the thyroid - CORRECT ANSWER - - superior thyroid artery
- inferior thyroid artery
origin of the superior thyroid artery - CORRECT ANSWER - external carotid artery
(branch of common carotid)
Branches of superior thyroid artery - CORRECT ANSWER - - posterior glandular branch
- anterior glandular branch
, origin of the inferior thyroid artery - CORRECT ANSWER - thyrocervical trunk of
subclavian artery
T/F the arteries to the thyroid are symmetrical R&L - CORRECT ANSWER - True (the
only difference is the origin of the left common carotid coming from the aortic arch and right
common carotid from brachiocephalic)
T/F the thyroid has more extensive drainage than supply - CORRECT ANSWER - True
veinous drainage of the thyroid - CORRECT ANSWER - - superior thyroid vein
- middle thyroid vein
- inferior thyroid vein
Drainage pathway of superior thyroid vein - CORRECT ANSWER - - internal jugular vein
What veins drain into the superior thyroid vein - CORRECT ANSWER - - cricothyroid
vein
- superior laryngeal vein
drainage pathway of middle thyroid vein - CORRECT ANSWER - - internal jugular vein
drainage pathway of inferior thyroid vein - CORRECT ANSWER - - brachiocephalic vein
(more medial)
lymphatics of the thyroid - CORRECT ANSWER - - prelaryngeal LN drain into the
superior deep cervical LN
- pretracheal LN drain into the inferior deep cervical LN
- paratracheal LN drain into inferior deep cervical LN