What does the thyroid gland do for the body CITE REFERENCESS

What does the thyroid gland do for the body? CITE REFERENCES

Solution

The Thyroid gland secretes hormones and plays an important role in metabolism, growth and maturation of the human body. Thyroid produces the following hormones-

Thyroid gland takes iodine, found in many foods, and convert it into thyroid hormones:thyroxine (T4) and triiodothyronine (T3). Thyroid cells are the only cells in the body which can absorb iodine. These cells combine iodine and the amino acidtyrosine to make T3 and T4. T3 and T4 are then released into the blood stream and are transported throughout the body where they convert oxygen and calories to energy. Every cell in the body depends upon thyroid hormones for regulation of their metabolism. The thyroid gland is under the control of the pituitary gland, a small gland the size of a peanut at the base of the brain (shown here in orange). When the level of thyroid hormones (T3 & T4) is lower than usual, the pituitary gland produces Thyroid Stimulating Hormone (TSH) which stimulates the thyroid gland to produce more hormones. Under the influence of TSH, the thyroid will manufacture and secrete T3 and T4 thereby raising their blood levels.

.Calcitonin is involved in calcium and bone metabolism.calcitonin protects against calcium loss from skeleton during periods of calcium mobilization, such as pregnancy and, especially, lactation. It acts to reduce blood calcium (Ca²⁺).It lowers blood Ca²⁺ levels in two ways:

References:

Costoff A. \"Sect. 5, Ch. 6: Effects of CT on Bone\". Medical College of Georgia. Archived from the original on June 22, 2008. Retrieved 2008-08-07

Rhoades R (2009). Medical Physiology: Principles for Clinical Medicine. Philadelphia: Lippincott Williams & Wilkins. ISBN 978-0-7817-6852-8.