Thyroid gland - Sukumar Flashcards
1
Q
Of all the endocrine organs, which one receives the highest blood flow?
A
Thyroid gland
2
Q
Functional unit of the thyroid gland
A
Follicle: consisting of layer of cells surrounding a lumen filled with colloid
*- Parafollicular cells (C cells) are found between the follicles
3
Q
What is the primary constituent of colloid?
A
Thyroglobulin
4
Q
Parafollicular Cells (C cells)
A
found in between follicles (fxnal unit of thyroid) that secrete calcitonin
5
Q
T3 vs T4 iodinations
Why is this imp?
A
T3 - triiodothyronine
3, 5, 3’
T4 -
Tetraiodothyronine
3, 5, 3’, 5’
TH synthesis involves iodination of tyr residues
6
Q
TH synthesis involves ______ of tyr residues, followed by the coupling of _______ to form the ___________
A
iodination
iodotyrosines –>
Iodothyronines
