Thyroid Gland Flashcards
(6 cards)
1
Q
Thyroid gland
A
located just inferior to the larynx (voice box) composed of right and left lateral lobes, one on either side of the trachea connected by the isthmus. The normal mass of the thyroid is 30 g.
2
Q
Thyroid follicles
A
Microsopic spherical sacs. the walls of each follicle consist primarily of follicular cells
3
Q
How many hormones does follicular cells produce?
A
Two hormones
- thyroxine
- triiodothyronine
4
Q
Thyroxine
A
contains four atoms of iodine
5
Q
Triiodothyronine
A
contains three atoms of iodine
6
Q
What does parafollicular cells produce?
A
the hormone calcitonin which helps regulate calcium homeostasis
