Thyroid and Parathyroid

Question 1

Thyroid relation to trachea

Answer 1

Anterior to trachea

Question 1

Thyroid relation to trachea

Answer 1

Anterior to trachea

Question 2

Trachea relation to Larynx

Answer 2

Inferiorr

Question 3

Trachea relation to Larynx

Answer 3

Inferiorr

Question 4

Thyroid Location

Answer 4

between the vertebral level of C5 T1 and between the
cartilage and the 6th tracheal ring.

Question 5

Isthmus location

Answer 5

opposite the 1st to 2nd tracheal rings.

Question 6

What strap muscles overlie the thyroid gland?

Answer 6

Sternothyroid and Sternohyoid

Question 7

Name the two nerves that supply the muscles of the vocal cords

Answer 7

Recurrent Laryngeal

Superior Laryngeal

Question 8

Recurrent laryngeal nerve runs

Answer 8

between trachea and oesophagus

Question 9

Superior laryngeal nerve runs

Answer 9

alongside superior thyroid artery. Supplies cricothyroid

Question 9

Superior laryngeal nerve runs

Answer 9

alongside superior thyroid artery. Supplies cricothyroid

Question 10

From which major artery in the neck does the superior thyroid artery arise?

Answer 10

ECA

Question 11

From which artery does the inferior thyroid artery arise?

Answer 11

Subclavian

Question 11

From which artery does the inferior thyroid artery arise?

Answer 11

Subclavian

Question 12

Into which vein does the superior thyroid vein drain?

Answer 12

Internal Jugular

Question 13

Into which vein does the middle thyroid vein drain?

Answer 13

Internal Jugular

Question 14

Into which vein does the inferior thyroid vein drain?

Answer 14

Brachiocephalic Vein

Question 15

Most lymph vessels from the thyroid gland drain into the

Answer 15

Deep Cervical Nodes

Question 16

What type of cell do you see lining the follicle of Thyroid Gland

Answer 16

Follicular Simple Cuboidal

Question 17

What colour does the colloid stain

Answer 17

Pink

Question 18

What hormones does the thyroid gland secrete

Answer 18

T3 – Triiodothyronine and T4 Thyroxine

Question 19

The parathyroid glands lie on the medial half of the posterior surface of each thyroid lobe, external to the

Answer 19

Thyroid Fibrous Capsule

Question 20

The superior parathyroids are situated at the level of the

Answer 20

Inferior Border of Cricoid Cartilage

Question 21

Arterial supply to both superior and inferior parathyroids is predominantly from the

Answer 21

Inferior Thyroid Arteries

Question 22

Venous drainage for parathyroids is via the veins draining the

Answer 22

thyroid to the internal jugular veins

Question 23

What kind of cells can be seen in parathyroid histology

Answer 23

Chief and Oxyphil

Question 24

What cells does Parathyroid Hormone act upon and what is their subsequent action

Answer 24

It increases the action of osteoclasts (bone re-modelling) which increases plasma calcium levels