| A | B |
|---|
| Characteristics of the Endocrine system | slow acting, long lasting |
| Endocrine system | secretes products directly into blood stream |
| Exocrine glands | secretes products into ducts |
| Hormone secretion is controlled mainly by | Negative Feedback |
| Three main groups of hormones | amines, steriods, peptides |
| Hormones circulate to all organs but affect only | target cells |
| Control of Hormonal Secretions | hormones, body fluids, and nerves |
| Pituatary Gland | Master gland |
| Hormones of the Posterior Pituitary | Oxytocin & Antidiuretic hormone |
| ADH target cells | kidney tubules, sweat glands, blood vessels |
| ADH is inhibited by | alcohol and hydration |
| ADH is stimulated by | dehydration |
| ADH hyposcretion | Diabetes insipidus |
| Oxytocin target cells | Smooth muscle of uterus & breasts |
| Oxytocin causes | strong uterus contractions; milk ejection |
| FSH Follicle Stimulating Hormone target cells | ovaries & testis |
| Oxytocin & ADH are produced in the | Hypothalamus |
| ACTH | Adrenocorticotropic Hormone |
| ACTH target cells | Adrenal Cortex |
| ACTH is inhibited by | Rising blood levels of cortisol |
| Hormones of the adrenal cortex | Aldosterone, sex hormones, cortisol |
| Hormones of the adrenal medulla are | Epinephrine (Adrenalin) and norepinephrine |
| TSH | Thyroid stimulating hormone |
| GH | Growth hormone |
| TSH target cells | thyroid gland |
| TSH is inhibited by | high level production of T4 & T3 |
| Hyposecretion of GH in children, results in | Dwarfism. |
| GH T4 & T3 target cells | most body cells |
| Over production of GH in adults is called | Acromegaly |
| Hypersecretion in children results | Gigantism |
| Prolactin target cells | breast |
| Prolactin is stimulated by | delivery of the placenta & emptying on breast |
| Prolactin | secretes breast milk |
| LH | Luteinizing Hormone |
| FSH | Follicle Stimulating Hormone |
| LH & FSH Target cells | Ovaries in ♀ & testis in males |
| LH is responsible in ♀ | secretion of estrogen & progesterone and ovulation |
| LH is responsible in ♂ | for the production of testosterone |
| FSH is responsible in ♀ | development of the egg |
| FSH is responsible in ♂ | production of the sperm |
