The thyroid gland is located anterior to the trachea in the throat.
It produces the thyroid hormones triiodothyronine (T3) and thyroxine (T4)
which increase cellular metabolism as well as other functions.
The thyroid gland is located anterior to the trachea in the throat.
It produces the thyroid hormones triiodothyronine (T3) and thyroxine (T4)
which increase cellular metabolism as well as other functions.
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| Thyroid Gland | 25X Thyroid Tissue | 100X Thyroid Tissue | 400X Thyroid Tissue | Thyroid Tutorial |
| System or Event Affected | Actions of T3/T4 |
| Basal Metabolism |  increases basal metabolic rate increases body temp (calorigenesis) increases appetite |
| Carbohydrate, lipid & protein Metabolism |
promotes glucose catabolism for energy stimulates protein synthesis increases lipolysis enhances cholesterol excretion in bile |
| Heart | promotes normal cardiac function |
| Nervous System | promotes normal neuronal development in fetus and infant promotes normal neuronal functionin adult enhances effects of sympatheticnervous system |
| Musculoskeletal | promotes normal body growth and maturation of skeleton promotes normal function and developmentof muscles |
| Reproductive | promotes normal female reproductive ability and lactation |