Class 11 NEET Biology Chemical Coordination and Integration

Statement I : Parathyroid hormone (PTH) indeed acts on bones and stimulates the process of bone resorption. It also acts on the kidneys to stimulate reabsorption of calcium, and on the intestines (indirectly via vitamin D activation) to enhance absorption of dietary calcium. All these actions increase the blood calcium levels.
Statement II : Parathyroid hormone and calcitonin (produced by the thyroid gland, not "Thyrocalcitonin") are key regulators of calcium homeostasis in the body. However, they do not play a significant role in carbohydrate metabolism. The key hormones involved in carbohydrate metabolism are insulin and glucagon, both produced by the pancreas. Therefore, Statement II is false.