Exam- Endocrine Disorders I (N5315 Mod 8 Exam4) Test with Solutions

Exam- Endocrine Disorders I (N5315 Mod 8 Exam4) Test
with Solutions

Thyroid Stimulating Hormone (TSH) Correct--secreted by pituitary gland


-regulates thyroid hormone secretion




T3 and T4 Correct--both released by thyroid gland


-transported by albumin or thyroxine-binding globulin (TBG) in blood


-stored as thyroglobulin (TG) to last 2-3 months




Functions of T3 and T4 Correct--increase metabolism


-maintenance of muscle tone


-skeletal muscle maturation


-antagonizes insulin


-regulates cellular metabolism


-heat production


-maintain cardiac output, contraction, and rate


-maintain GI secretions


-assist Calcium mobility

, Exam- Endocrine Disorders I (N5315 Mod 8 Exam4) Test
with Solutions

-stimulate lipid metabolism, free fatty acid release, and cholesterol synthesis




T4 (Thyroxine) Correct--90% of the hormone released from thyroid


-less potent


-longer lived


-almost all converted inside cell to T3 before entering nucleus




T3 (Triiodothyronine) Correct--10% of the hormone released from thyroid


-more potent


-short-lived


-present in smaller amounts




Iodine Correct--used to make thyroxine


-takes appx 1 mg per week


-iodides trapped by thyroid gland


-uptake regulated by TSH