MICROANATOMY

ENDOCRINE ORGANS AND RESPIRATORY SYSTEM

ENDOCRINE ORGANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What gland secretes thyroxine?
A
Adrenals
B
Parathyroids
C
Pineal Body
D
Thyroid
Explanation: 

Detailed explanation-1: -The thyroid gland, anterior pituitary gland, and hypothalamus comprise a self-regulatory circuit called the hypothalamic-pituitary-thyroid axis. The main hormones produced by the thyroid gland are thyroxine or tetraiodothyronine (T4) and triiodothyronine (T3).

Detailed explanation-2: -The thyroid gland produces three hormones: Triiodothyronine, also known as T3. Tetraiodothyronine, also called thyroxine or T4.

Detailed explanation-3: -Your hypothalamus releases thyrotropin-releasing hormone (TRH), which triggers your pituitary gland to release thyroid-stimulating hormone (TSH), which stimulates your thyroid to release T3 and T4.

Detailed explanation-4: -Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It is the inactive form and most of it is converted to an active form called triiodothyronine by organs such as the liver and kidneys.

Detailed explanation-5: -Thyroid Stimulating Hormone (TSH) is produced and released into the bloodstream by the pituitary gland. It stimulates the production of the thyroid hormones, thyroxine (T4) and triiodothyronine (T3), by the thyroid gland by binding to its receptors in the thyroid gland.

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