ANATOMY

Detailed explanation-1: -Hypothyroidism, caused by an underactive thyroid gland, typically manifests as bradycardia, cold intolerance, constipation, fatigue, and weight gain. In contrast, hyperthyroidism caused by increased thyroid gland function manifests as weight loss, heat intolerance, diarrhea, fine tremor, and muscle weakness.

Detailed explanation-2: -Hyperthyroidism is an overactive thyroid (when it produces too much thyroid hormone). Hypothyroidism is an underactive thyroid (when it does not produce enough). Hypothyroidism is more common than hyperthyroidism.

Detailed explanation-3: -Hyperthyroidism is when the thyroid makes too much thyroid hormone. It causes many body systems to become overactive. Hypothyroidism happens when the thyroid isn’t making enough thyroid hormone. It can cause many of the body systems to slow down too much.

Detailed explanation-4: -Too little production of thyroxine by the thyroid gland is known as hypothyroidism. It may be caused by autoimmune diseases, poor iodine intake or caused by the use of certain drugs. Sometimes, the cause is unknown.

Detailed explanation-5: -These hormones are called thyroxine and triiodothyronine. They affect processes such as heart rate and body temperature, and help convert food into energy to keep the body going. In hyperthyroidism, the thyroid gland produces too much thyroxine or triiodothyronine, which speeds up the body’s metabolism.