Endocrine System Endocrine System Endocrine glands are composed Slides: 37 Download presentation Endocrine System Endocrine System • Endocrine glands are composed of cells that secrete: – Hormones • amino acid derivatives • peptides and proteins • steroids • Hormones act by attaching to receptors of specific target cells • Function of endocrine system: – homeostasis – growth and development Endocrine Glands • Hypothalamus – oxytocin production – ADH production – production and secretion of regulatory hormones for anterior pituitary • Pituitary (hypophysis) – posterior pituitary • oxytocin secretion • ADH secretion • Pituitary (hypophysis) – anterior pituitary • Tropic hormones – TSH – ACTH – Gonadotropins: FSH, LH • Prolactin • Growth hormone – all anterior pituitary hormones are regulated by hypothalamic hormones – regulation dependent upon hypophyseal portal system • Thyroid Gland • Thyroid Gland – T 4 and T 3: released by thyroid follicles – calcitonin: released by C cells • Parathyroid glands • Parathyroid glands • Parathyroid glands – PTH • Adrenal Gland • Adrenal Gland – Adrenal cortex • mineralocorticoids • glucocorticoids • adrenal androgens – Adrenal medulla • E and NE • Endocrine pancreas – Islets of Langerhans • glucagon: from alpha cells • insulin: from beta cells • somatostatin: from delta cells • Pineal gland – melatonin • Heart – ANP • Kidney – renin – EPO • Thymus Gland – thymosin • Reproductive System – Testes • testosterone • inhibin – Ovaries • estrogens • progesterone Endocrine Disorders • Acromegaly Endocrine Disorders, continued • Acromegaly • Gigantism Endocrine Disorders, continued • Acromegaly • Gigantism • Pituitary Dwarfism Endocrine Disorders, continued • Goiter Endocrine Disorders, continued • Goiter Endocrine Disorders • Grave’s disease Endocrine Disorders, continued • Cretinism Endocrine Disorders, continued • Cushing’s disease Endocrine Disorders, continued • Cushing’s disease • Addisons disease Endocrine Disorders, continued • Type I diabetes • Type II diabetes