copy 2

Question 1

What type of artery is found 10% of people that supplies the thyroid, where does it arise from, and what exactly does it supply?

Answer 1

Artery: Thyroid Ima Artery

Arises: From Aorta, brachiocephalic trunk, or internal carotid artery.

Supplies: Isthmus

Question 2

What are the structures, nerves, arteries, and veins that are located posterior to the thyroid?

Answer 2

structures: hyoid bone, Thyroid cartlige, Trachea.

Nerves: Vagus nerve, Recurrent laryngeal nerve, Superior laryngeal nerve

Arteries: Common carotid artery

Veins: Internal jugular vein

Question 3

What is the venous drainage of the thyroid?

Answer 3

Usually 3 veins on anterior surface

Superior thyroid veins Drain superior poles of thyroid

Middle thyroid veins Drain lateral poles

Inferior thyroid veins Drain inferior poles

Question 4

Where do the superior and middle thyroid veins drain?

Answer 4

Drain into the Internal jugular veins

Question 5

Where does the inferior thyroid vein drain?

Answer 5

Brachiocephalic vein

Question 6

What is the lymphatic drainage of the thyroid?

Answer 6

1. prelaryngeal lymph nodes
2. pretracheal and paratracheal lymph nodes.

Lateral lymph nodes: Drain into deep cervical lymph nodes

Finally: Into either brachiocephalic or thoracic duct

Question 7

What do the lateral lymph nodes that drain the thyroid run along?

Answer 7

Superior thyroid veins

Question 8

Where are the parathyroid glands embeded?

Answer 8

In the fibrous capsule

Question 9

How is the thyroid gland subdivided and what do these divisions contain

Answer 9

The thyroid gland is subdivided by
capsular septa into lobules
containing follicles.

Question 10

Label

Answer 10

Question 11

What do thyroid follicles contain?

Answer 11

colloid, a viscous gel consisting mostly of iodinated
thyroglobulin.