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is picked up by receptors and brain stops sending message to endocrine glands II Endocrine System Components A Components 1 Endocrine glands 2 Chemical messages = hormones 3 works intimately in conjunction with the nervous and circulatory systems Example Hypothalamus Anterior Pituitary Example Hypothalamus Posterior Pituitary 4
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hormones being produced Hypersecretion of hormones by glands high levels of hormones being produced B Humans as an example of typical vertebrate endocrine system 1 Anterior pituitary gland and its hormones base of the brain a GH growth hormone stimulates muscle and skeletal growth 1 Target organ liver stimulates liver to produce
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messenger system most hormones attach to receptors on the cell membrane they never enter the cell the receptor delivers the message usually in the form of cAMP 2 Direct system only steroids sex hormones can pass through the cell membrane and directly affect DNA or chemical reactions in the cell BI 01 Homepage
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their own hormones For example the pituitary gland produces a thyroid stimulating Hormone which then travels to the thyroid gland where it stimulates the production of thyroid hormones The pituitary gland regulates most hormones in the body The adrenal gland produces hormones that control the metabolic system and also regulates stress levels in our body
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ovaries pelvic region of women a estrogen and progesterone maintain secondary sexual characteristics regulate reproductive cycle C How do hormones work 1 2nd messenger system most hormones attach to receptors on the cell membrane they never enter the cell the receptor delivers the message usually in the form of cAMP
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abnormal growth of hands and feet acromegaly in adulthood b TSH Thyroid stimulating hormone stimulates Thyroid Gland to produce hormones Disorder Hyper Goiter overstimulation of thyroid c FSH follicle stimulating hormone stimulates development of follicles d LH luteinizing hormone stimulates development of testes and
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