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The Endocrine system Glands and hormones. Hormones- chemical messengers carried by blood- –May stimulate other glands –Regulate growth, development, metabolism,

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Presentation on theme: "The Endocrine system Glands and hormones. Hormones- chemical messengers carried by blood- –May stimulate other glands –Regulate growth, development, metabolism,"— Presentation transcript:

1 The Endocrine system Glands and hormones

2 Hormones- chemical messengers carried by blood- –May stimulate other glands –Regulate growth, development, metabolism, sex processes

3 Hormones need a specific receptor on a specific cell to do their job

4 Major Glands of the Endocrine system Pituitary Thyroid Parathyroid Adrenal. Pancreas Ovaries Testes

5 Pituitary gland Master gland of body Located in the depression of sphenoid bone Produces many hormones that affect other glands –thyroid stimulating hormone –Somatotropin- growth hormone –Lutenizing (LH)- causes ovulation –ICSH- causes testes to secrete testosterone –Melanocyte stimulating- distribution of melanin in skin –ADH- antidiuretic hormone

6 Giantism- oversecretion of somatotropin before puberty Dwarfism- undersecretion of somatotropin. Cause: tumor, injury, infection, genetics Diabetes insipidus- decreased ADH

7 Thyroid- produces hormones that control metabolism and calcium in blood. Thyroid gland must have any source of iodine –goiter- not enough iodine –hyperthyroidism –hypothyroidism

8 Adrenal glands Located just above the kidney Secretes many hormones Epinephrine Norepinephrine Many steroid hormones, inc estrogen and androgens.

9 Pancreas- pancreatic juices into the intestine secretes insulin, a hormone that transports glucose into cells. Also secretes glucagon- increases glucose in bloodstream

10 Diabetes Mellitus- Cause- decreased secretion of insulin Symptoms –Excessive thirst, excessive urination, hyperglycemia, slow healing of skin infections –Affects 21 million in US: 7% of population –Estimated 1/3 of people who have diabetes dont know it –225,000 die each year –132 billion/year- 10% of our health care spending

11 Insulin was the first hormone identified (late 1920's) which won the doctor and medical student who discovered it the Nobel Prize (Banting and Best) Human Insulin - First ever approved genetically engineered human therapeutic by GenentechInsulin

12 In May 1960, the FDA approved the sale of a pill that arguably would have a greater impact on Americans than any other drug in the nation's history. For women across the country, the contraceptive pill was liberating: it allowed them to pursue careers, fueled the feminist and pro-choice movements and encouraged more open attitudes towards sex. Estrogen in pill suppresses FSH in pituitary- ovulation does not occur


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