Discussion Topic #2: Calcium Homeostasis (Endocrine System) Answer

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Discussion Topic #2: Calcium Homeostasis (Endocrine System)

Calcium homeostasis is critical for maintaining healthy body functions. Discuss the endocrine regulation of calcium homeostasis by answering:

 

(A) Identify the two major hormones that regulate plasma calcium concentration and the stimulus for their release/activation.

 

(B) Discuss the mechanisms by which these hormones increase extracellular calcium concentration.

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Discussion Topic #2: Calcium Homeostasis (Endocrine System) Answer

There are two major hormones that regulate plasma calcium concentration, which are the calcitonin and parathyroid hormone. The calcitonin is secreted by the thyroid gland, while parathyroid hormone is secreted by the parathyroid gland. When the blood plasma calcium level increases above the normal calcium level, this stimulates the parathyroid gland to secrete parathyroid hormone. When the blood plasma calcium levels decreases below the normal calcium level, this stimulates the thyroid gland to secrete the calcitonin.

This question is taken from Physiology 001 – Introduction to Human Physiology » Summer 2021 » Discussions