Textbook Question
You have read that aldosterone causes sodium ion retention from the kidneys. How would blocking aldosterone secretion decrease the amount of water retained from the fluid in the kidneys?
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16. The Endocrine System
Introduction to the Endocrine System
Multiple Choice
Which primary thyroid hormone regulates the rate of metabolism?
A
Insulin
B
Calcitonin
C
Parathyroid hormone (PTH)
D
Thyroxine (T4)
Verified step by step guidance1
Identify the primary function of the thyroid gland, which is to regulate metabolism in the body.
Understand that the thyroid gland produces several hormones, including Thyroxine (T4) and Triiodothyronine (T3), which are crucial for metabolic regulation.
Recognize that Thyroxine (T4) is the main hormone produced by the thyroid gland and is responsible for controlling the rate of metabolism.
Differentiate between the hormones listed: Insulin (regulates blood glucose levels), Calcitonin (involved in calcium homeostasis), and Parathyroid hormone (PTH) (regulates calcium levels in the blood).
Conclude that Thyroxine (T4) is the primary thyroid hormone that regulates the rate of metabolism, as it increases the basal metabolic rate and affects protein synthesis.
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