THYROID GLAND :- • Has two lobes on either side of trachea | .

THYROID GLAND :-

• Has two lobes on either side of trachea interconnected by isthmus (connective tissue).


• Composed of follicles and stromal tissues.


• Follicular cells synthesise thyroxine (T4 ) and triiodothyronine (T3).


• Iodine is necessary for normal functioning in of thyroid.

• Goitre (Hypothyrodism) : Enlargement of thyroid gland. Hypothyrodism
may lead to mental retardation and stunted growth (cretinism) in the baby if it occurs during pregnancy.


• Hyperthyroidism : Occurs due to cancer or due to development of nodules in thyroid glands. Effects body physiology as abnormal high levels of thyroid hormones is synthesised.