Moderate

Thyroid gland:

Correct answer: A. Calcitonin

  • A. Calcitonin
  • B. Water retention by kidneys
  • C. Sugar in urine
  • D. Kinesis

Explanation

Calcitonin is a hormone produced by the thyroid gland, specifically by the parafollicular cells (or C cells) of the thyroid. Calcitonin plays a role in calcium and phosphorus metabolism. It helps to regulate blood calcium levels by lowering them when they are high, counteracting the action of parathyroid hormone (PTH).

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About Coordination and Control

Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.

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