a.
To determine: The number of variables present in the graph.
Introduction: The parathyroid hormone is located on the dorsal surface of the thyroid gland. The main function of parathyroid hormone is to elevate the concentration of Ca2+ in the plasma. To achieve this increase, parathyroid hormones act on the kidney, bones, and intestine.
b.
To determine: The ways in which the results of the study can be explained.
Introduction: The parathyroid hormone increases the reabsorption of calcium in the distal part of the nephron in each kidney. It enhances the intestinal absorption of calcium via its action on vitamin D3.
c.
To determine: Whether supplements of multivitamins affect the results.
Introduction: The hormone 1,25-dihydroxycholecalciferol increases the intestinal absorption of calcium. This hormone is also known as vitamin D3 or calcitriol. The body synthesizes calcitriol from vitamin D that has been acquired through diet or formed in the skin through the action of sunlight.
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Human Physiology: An Integrated Approach (8th Edition)
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