Thyroid Gland Anatomy

Question 1

Surgical importance of pre-tracheal fascia

Answer 1

1) Movement up and down of the thyroid gland.
2) Retrostemal extension.
3) Compression manifestation of huge goitre.
4) A thickening of pretracheal fascia between cricoid cartilage and posteromedial aspect of
thyroid gland is called ligament of Berry, the RLN lies behind it and it is liable to injury
during operation at this site.

Question 2

Relation of postero-lateral surface of thyroid

Answer 2

Carotid sheath+its content ( carotid A, vagus N., int jagular v. , sympa - chain )
Pre-verteblar fascia
It side → arch of thoracic duct

Question 3

Relation of isthmus anteriorly

Answer 3

. Prettacheal fascia
Strap Ms
Ant jugular vein

Question 4

Relation of isthmus post.

Answer 4

Second to fourth tracheal rings

Question 5

Origin of superior thyroid A

Answer 5

External carotid A.

Question 6

Course of superior thyroid A.

Answer 6

It descends with ex. Laryngeal nerve
* the nerve goes deep