Multiple Choice
Which hormone stimulates the stomach's parietal cells to produce hydrochloric acid?
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16. The Endocrine System
Introduction to the Endocrine System
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Which of the following hormones is produced by the thyroid gland and controls blood calcium levels?
A
Calcitonin
B
Thyroxine
C
Parathyroid hormone
D
Insulin
Verified step by step guidance1
Identify the hormones listed in the problem: Calcitonin, Thyroxine, Parathyroid hormone, and Insulin.
Understand the primary function of each hormone: Calcitonin is involved in lowering blood calcium levels, Thyroxine regulates metabolism, Parathyroid hormone increases blood calcium levels, and Insulin regulates blood glucose levels.
Determine which hormone is produced by the thyroid gland: The thyroid gland produces Calcitonin and Thyroxine.
Focus on the hormone that controls blood calcium levels: Calcitonin is responsible for lowering blood calcium levels by inhibiting osteoclast activity and promoting calcium excretion by the kidneys.
Conclude that Calcitonin, produced by the thyroid gland, is the hormone that controls blood calcium levels.
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