Clinical Endocrinology Flashcards
Action of GnRH
Stimulates release of FSH and LH
Action of CRH
Stimulates release of ACTH
Action of TRH
Stimulates release of TSH
Action of GhRH
Stimulates release of GH
Action of Somatostatin
Inhibits release of GH and TSH
Action of Dopamine (Prolactin-Inhibiting Factor)
Inhibits release of Prolactin
Connects the hypothalamus and pituitary gland
Infundibulum
[Anterior Pituitary] Cells that secrete GH
Somatotrophs
[Anterior Pituitary] cells that secrete PRL
Lactotrophs
[Anterior Pituitary] cells that secrete TSH
Thyrotrophs
[Anterior Pituitary] cells that secrete FSH and LH
Gonadotrophs
[Anterior Pituitary] cells that secrete ACTH
Corticotrophs
Target tissue of FSH and LH
Gonads
Target tissue of ACTH
Adrenal cortex
Target tissue of TSH
Thyroid
Target tissue of Prolactin
Breasts
What are the thyroid hormones?
(T4) Thyroxine, (T3) Triiodothyronine, (Reverse T3), Calcitonin
The most important test of thyroid function
TSH
- Useful in assessing the metabolic activity of the thyroid and in the evaluation and treatment of thyroid cancer
- measures thyroidal uptake of radioactive iodine
Radioactive iodine uptake