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Learn about your thyroid

By on April 11, 2013 in Health with 0 Comments

thyroid

Thyroid glands have a significant role in the metabolism of the body. We normally hear about people suffering from abnormal thyroid conditions such as hyperthyroidism, hypothyroidism, simple goiter or multi-nodular goiter etc. But do you know about the normal functions and role of thyroid gland in the body? Here is an overview of location, secretions and functions thyroid gland:

Thyroid gland, a paired butterfly shaped gland which is connected by isthamus, is present in front of the trachea or the wind pipe which is stimulated by the higher centers that are the hypothalamus and pituitary gland. This essential endocrine gland secretes three major hormones. These are:

  1. T3 (Tri-iodothyronine which is a more potent form)
  2. T4 (Thyroxin)
  3. Calcitonin

T3 and T4 are majorly involved in the metabolism of the body. These require iodine for their synthesis. Calcotonin is responsible for depositing calcium within the bones when the calcium level is high in blood. This hormone works in opposition to parathhormone of the parathyroid gland.

Thyroid hormones have many physiological functions for example it influences many enzymes, has essential role in normal growth and development of the body. More so, thyroid hormones have quite a stimulatory effect on the nervous system causing alertness, wakefulness and improving learning capacity and memory.

Embryologically, thyroid gland is at first present behind the tongue but it moves downwards and reaches at the level of the neck behind the windpipe before birth of the child. There are also cases of abnormality in the location and function of the gland congenitally.

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