About 90% of the secretory product released from the thyroid gland is in the form of
A) T3
B) T4
C) MIT
D) DIT
E) TSH

Question

Quizplus · Accepted Answer

The thyroid gland secretes two major hormones, thyroxine (T4) and triiodothyronine (T3). About 90% of the secretory product released from the thyroid gland is in the form of T4, while the remaining 10% is in the form of T3. MIT (monoiodotyrosine) and DIT (diiodotyrosine) are intermediate products in the synthesis of T3 and T4, but they are not secreted from the thyroid gland. TSH (thyroid-stimulating hormone) is produced by the pituitary gland and acts on the thyroid gland to stimulate the production and release of T3 and T4.

About 90% of the Secretory Product Released from the Thyroid