Which of These Statements Describes Thyroxin

Question

Which of these statements describes thyroxin
A)It is formed by coupling one MIT and one DIT within the colloid.
B)It is produced by the C cells of the thyroid gland.
C)It exerts a calorigenic effect.
D)It inhibits thyroid-stimulating immunoglobulin in a negative-feedback fashion.

Accepted Answer

Thyroxin exerts a calorigenic effect, meaning that it increases metabolic activity and heat production in the body.

Other statements:
A) Thyroxin is formed by coupling two molecules, one of diiodotyrosine (DIT) and one of monoiodotyrosine (MIT), within the colloid.
B) Calcitonin is produced by the C cells of the thyroid gland, not thyroxin.
D) Thyroxin does not inhibit thyroid-stimulating immunoglobulin. It is regulated by negative-feedback mechanisms involving thyroid-stimulating hormone (TSH) from the pituitary gland.