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I'm doing the Thyroid gland and parathyroid glands, and the hormones they make are t3, t4, calcitonin, and parathyroid hormone. What affect do these hormones have on the human body? (I've been looking everywhere. Somebody help me. I need some help on all this hard work I'm doing, please.)

2007-03-26 16:17:24 · 2 answers · asked by somebody 3 in Science & Mathematics Biology

2 answers

The thyroid consists of two lobes located on the ventral surface of the trachea. Produces T3 ( triiodothyrone) and T4 ( thyroxine) derived from the amino acid tyrosine. T3 is usually more reactive than T4. Iodine is the element that is necessary for the production of these hormones. It also produces and secretes the material calcitonin which lowers blood calcium by inhibiting the release from bones. TSH controls the production and release of these thyroid hormones.

Parathyroid Glands:
4 small glands embedded in the thyroid gland. Secretes Parathormone which regulated the calcium levels in the body. Vitamin D is needed to function.

2007-03-26 16:37:25 · answer #1 · answered by ATP-Man 7 · 1 0

1.Parathyroid hormone (PTH), or parathormone, is secreted by the parathyroid glands as a polypeptide containing 84 amino acids. It acts to increase the concentration of calcium in the blood

2.whereas calcitonin (a hormone produced by the thyroid gland) acts to decrease calcium concentration and
Vitamin D regulation

3.Thyroxine, (often abbreviated as T4) is the major hormone secreted by the follicular cells of the thyroid gland.
T4 is involved in controlling the rate of metabolic processes in the body and influencing physical development.

4.T3, is a thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity.It exerts the same biological effects as thyroxine but is more potent.The ratio of T4 to T3 released in the blood is roughly 20 to 1. Thyroxine is converted to the active T3 (three to four times more potent than T4) within cells by deiodinases

2007-03-27 17:46:02 · answer #2 · answered by ANITHA 3 · 0 0

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