ENDOCRINE
INTRODUCTION
ENDOCRINE SYSTEM - communication and control, provides slower but longer-lasting control by way of hormones secreted into and circulated by the blood
MAIN ORGANS - pineal, hypothalamus, pituitary, parathyroids, thyroid, thymus, adrenals, pancreas islets, ovaries, testes
HORMONES - regulators of metabolism, growth and development, reproduction, etc
- homeostasis
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ENDOCRINE GLANDS
Ductless glands
Secrete hormones that diffuse directly into the blood
TARGET CELL - has a specific receptors for a specific hormone
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| GLAND/HORMONES | FUNCTION |
|---|---|
| thyroid-stimulating hormone (THS) (tropic) | stimulates secretion of thyroid ho thyroid hormones |
| Adrenocorticotropic hormone (ACTH) (tropic) | stimulates secretion of adrenal cortex hormones |
| follicle stimulating hormone (FSH) (tropic) | F: stimulates development of ovarian follicles and secretion of estrogensM: stimulates seminiferous tubules of testes to grow and produce sperm |
| Luteinizing hormone (LH) (tropic) | F: stimulates maturation of ovarian follicle and ovum, stimulates secretion of estrogen, triggers ovulation, stimulates development of corpus luteumM: stimulates interstitial cells of the testes to secrete testosterone |
| Growth hormone (GH) | Stimulates growth in all organ; mobilizes nutrient molecile |