Four small glands situated in the neck beside the thyroid gland. These glands secrete parathyroid hormone, which is mainly concerned with calcium and phosphorous metabolism.
One of two glands located on each side in or near the thyroid gland that mainly controls calcium metabolism and muscle tone. Failure to function properly results in convulsions.
One of four small glands which are situated in or near the wall of the thyroid gland and secrete a hormone which controls the way in which calcium and phosphorus are deposited in bones.
One of four small endocrine glands, attached to the thyroid gland in the neck, that secretes parathyroid hormone, which acts to maintain normal levels of calcium in the blood and normal neuromuscular function. Decreased activity of the parathyroid glands can result in tetany.
Endocrine glands on the dorsal surfaces of the lateral lobes of the thyroid gland; secretes parathyroid hormone for calcium homeostasis in the blood.
Four small glands located behind the thyroid gland that are important in regulating the levels of calcium in the blood. The parathyroids are part of the endocrine system because they release parathyroid hormone directly into the bloodstream.
Two pairs of yellowish brown endocrine glands that are situated behind, or sometimes embedded within, the thyroid gland. They are stimulated to produce parathyroid hormone by a decrease in the amount of calcium in the blood.
One of four small endocrine glands about 6 mm long by 3 to 4 mm broad on the back of and at the lower edge of the thyroid gland, or embedded within it. These glands secrete parathyroid hormone (parathormone), that regulates calcium and phosphorus metabolism.
Glands that regulate blood calcium and phosphorus levels so that the nervous and muscular systems can function properly.
Four tiny endocrine glands attached to the back of the thyroid gland that regulate the levels of calcium and phosphorus in the body.
There are two sets of diminutive glands situated near the undersurface of the thyroid gland. These glands are responsible for the production of parathyroid hormone, which governs the utilization of calcium and phosphorus within the body.
Situated behind the thyroid gland in the neck, there are two sets of oval, pea-sized glands. These glands manufacture parathyroid hormone (PTH), a substance that aids in controlling the calcium levels in the bloodstream.
The body consistently keeps tabs on blood calcium levels due to the potential disruption of muscle and nerve operations by even minor fluctuations. In the event of a decline in calcium levels, the parathyroid glands respond by releasing additional PTH (see feedback). This reaction prompts bones to release more calcium into the bloodstream, intestines to enhance absorption from food, and kidneys to conserve calcium. This sequence swiftly elevates calcium levels. Conversely, if blood calcium levels become excessive, the glands curtail PTH production.
Certain individuals possess a solitary parathyroid gland or an excess of these glands located in the neck or chest. On occasion, the parathyroid glands may become excessively active, leading to a condition known as hyperparathyroidism. This condition can result in bone deterioration and the formation of stones within the kidneys, ureters, or bladder. Conversely, these glands might experience reduced activity, culminating in tetany characterized by painful muscle spasms or even seizures.