CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

The Pituitary Gland

In a normal t...

Question

In a normal thyroid gland of an adult, triiodothyronine is mostly derived from

A

Thyronine

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Thyromine

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Thyroxine

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

All of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Thyroxine
A normal adult thyroid gland weighs 10 to 20 g and receives blood from bilateral superior and inferior thyroid arteries and a small artery called the thyroid ima.
The thyroid secretes two hormones. Thyroxine ( $T_{4}$ ) makes about 90% of hormone production and triiodothyronine ( $T_{3}$ ) produces the other 10%. Peripheral tissues convert $T_{4}$ to $T_{3}$ , and most of $T_{3}$ is derived from $T_{4}$ .

Therefore, the correct answer is option C.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Fill in the blanks with approriate words.

The anterior pituitary secretes thyroid-stimulating hormone (TSH), which stimulates the release of ........., triiodothyronine, and .........from the ......... gland.

Q. Given below are four statements (A - D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
(A) Thymus secretes __(i)___ which help in differentiation of ___(ii)___.
(B) The adrenal medulla secretes ___(i)___ which stimulates the breakdown of ___(ii)___ to increase the blood glucose concentration during emergency situations.
(C) The Leydig's cells or ___(i)___ present in the intertubular spaced in testis, produce a group of hormone called __(ii)__.
(D) Thyroid gland secrestes _____(i)____ and triiodothyronine. ___(ii)___ is essential for the normal rate of hormone synthesis in the thyroid.

Q. Given below are four statements (a - d) each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
(a) Thymus secretes ______(i) which help in differentiation of ________(ii).
(b) The adrenal medulla secretes _______(i) which stimulates the breakdown of _______(ii) to increase the blood glucose concentration during emergency situations.
(c) The Leydig cells or _______(i) present in the intertubular spaces in testis, produce a group of hormones called _________(ii).
(d) Thyroid gland secretes _______(i) and triiodothyronine. ________(ii) is essential for the normal rate of hormone synthesis in the thyroid.

Q. Name the nutrient element which is essential for the normal working of the thyroid gland.

Q. Pituitary, thyroid, adrenal, pancreas, testes and ovary. From the glands listed above one gland acts both as exocrine and endocrine. Name it.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Pituitary Gland

BIOLOGY

Watch in App

explore_more_icon

Explore more

The Pituitary Gland

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon