Multiple Choice
Which structure in the inner ear is filled with endolymph?
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16. The Endocrine System
Introduction to the Endocrine System
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Which gland requires the element iodine to produce its hormones?
A
Thyroid gland
B
Pituitary gland
C
Pancreas
D
Adrenal gland
Verified step by step guidance1
Identify the function of each gland listed in the options to understand their hormone production requirements.
Understand that the thyroid gland is responsible for producing hormones such as thyroxine (T4) and triiodothyronine (T3), which regulate metabolism.
Recognize that iodine is a crucial element required for the synthesis of thyroid hormones, as it is incorporated into the structure of these hormones.
Compare this requirement with the other glands: the pituitary gland, pancreas, and adrenal gland, none of which require iodine for their primary hormone production.
Conclude that the thyroid gland is the only gland among the options that requires iodine to produce its hormones, specifically T3 and T4.
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