* Calcareous glands: These glands are found in some invertebrates, like earthworms, and are responsible for producing calcium carbonate. They are located in the dorsal blood vessel of the earthworm.
* Parathyroid glands: These glands are located in the neck near the thyroid gland and play a vital role in calcium regulation in the body.
* Calcitonin-producing cells: These cells are found in the thyroid gland and are responsible for producing calcitonin, a hormone that helps regulate calcium levels in the blood.
If you can provide more context about where you encountered the term "calciferous glands," I can provide a more accurate answer.
