QuestionSBA
QuestionChoice
The thyroid usually drains to the prelaryngeal and tracheal lymph nodes but may drain to the deep cervical nodes or directly into the thoracic duct or right lymphatic duct. The supraclavicular nodes drain structures of the thorax and abdomen.
10027140
e
The lymphatic drainage of the thyroid gland is usually to the supraclavicular lymph nodes
QuestionChoice
The thyroid gland is covered anteriorly by pre tracheal fascia and the infrahyoid muscles (sternohyoid and sternothyroid. This enables the thyroid to move up and down with the larynx, but not to ascend above it.
10027136
a
The thyroid gland is covered anteriorly by pre tracheal fascia and the infrahyoid muscles
QuestionChoice
The thyroid ima artery is an anatomical variant present in up to 10% of the population, originating from the aortic arch. It is located in the midsagittal plane, anterior to the thyroid isthmus, and therefore sometimes provides difficulty if it becomes necessary to gain anterior access to the airway.
10027137
b
The variant thyroid ima artery originates from the thyrocervical trunk
QuestionChoice
The superior laryngeal and recurrent laryngeal nerves, branches of the vagus nerve, provide the parasympathetic supply to the thyroid gland. The sympathetic supply to the thyroid gland is from the sympathetic trunk.
10027139
d
The sympathetic supply to the thyroid gland is from the superior laryngeal and recurrent laryngeal nerves
QuestionChoice
The superior and middle thyroid veins drain into the internal jugular veins, and the inferior thyroid veins drain into the brachiocephalic veins.
10027138
c
The inferior thyroid veins drain into the internal jugular veins
Concept
Chapter
2693
3834
Thyroid Axis
Topic
167
Endocrine physiology
17825
Which of the following statements regarding the anatomy of the thyroid gland is correct?
a