Question

$C{a}^{2+}$ level is controlled by

• A. Thyroxine
• B. FSH
• C. Pancreas
• D. Thyroid and parathyroid

Answer 1

The correct option is D Thyroid and parathyroid

Calcitonin hormone, secreted by thyroid gland in response to increased blood calcium level, stimulates temporary reduction in number and activity of osteoclasts and thereby reducing the blood calcium level to normal. Parathyroid hormone of parathyroid gland reduces the blood phosphate level while increases the blood calcium level. Therefore, thyroid and parathyroid gland together maintain the blood glucose level to normal. This makes option D correct. Thyroxine is a thyroid hormone which targets all tissues and stimulates metabolic rate, growth and development. This makes option A incorrect. Follicle stimulating hormone (FSH) is one of the gonadotropins secrete by anterior pituitary; FSH promote spermatogenesis in seminiferous tubules of male and follicle development in females. Option B is incorrect. The endocrine parts of pancreas are islets of Langerhans that produce and secrete insulin and glucagon hormones. Insulin and glucagon together maintain the blood glucose level. This makes option C incorrect. Correct answer is D.