HormonesThe Final SL lesson EVER !!!
Where do they come from ?
What do they do ?• Hormones are the body’s chemical  messengers. They regulate cell  death, stimulate and inhibit growth, ...
Give me an example • Adrenalin or more properly epinepherine is  secreted by the adrenal glands. It is  responsible for t...
And another• Thyroxine is produced in the thyroid gland and  regulates body metabolism. If there is an  absence of this mo...
WOW ! ADH – antidiuretic hormone
Insulin
That’s crazy – what does insulin do ?• Insulin functions to control blood glucose  concentration, When released it stimula...
Aldosterone• This regulates the readsorption of NaCl in the  kidney and increases loss of potassium ions.  Aldosterone als...
Sex Hormones• Common backbone with the other steroids  such as cholesterol ……
Male Sex Hormone• Testosterone is responsible male sexual  characteristics.
Female Sex Hormones
Mode of action oral contraceptives• At beginning of menstrual cycle oestradoil is released.• Egg is released and uterus wa...
Steroids• Use – bone marrow stimulation, growth  stimulation, stimulate appetite, induction or  delay of puberty• Abuse – ...
Ibdp hormones
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Ibdp hormones

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Ibdp hormones

  1. 1. HormonesThe Final SL lesson EVER !!!
  2. 2. Where do they come from ?
  3. 3. What do they do ?• Hormones are the body’s chemical messengers. They regulate cell death, stimulate and inhibit growth, suppress the immune system, regulate metabolism. They also control reproductive cycles.
  4. 4. Give me an example • Adrenalin or more properly epinepherine is secreted by the adrenal glands. It is responsible for the regulation of heart beat and rate of release of glucose into the blood stream.
  5. 5. And another• Thyroxine is produced in the thyroid gland and regulates body metabolism. If there is an absence of this molecule, a lack being hypothyroidism, and an excess hyperthyroidism.
  6. 6. WOW ! ADH – antidiuretic hormone
  7. 7. Insulin
  8. 8. That’s crazy – what does insulin do ?• Insulin functions to control blood glucose concentration, When released it stimulates cells in the liver and muscles to take up glucose and store it as glycogen.• Insulin is used in diabetic therapy.
  9. 9. Aldosterone• This regulates the readsorption of NaCl in the kidney and increases loss of potassium ions. Aldosterone also controls swelling in the uterus.
  10. 10. Sex Hormones• Common backbone with the other steroids such as cholesterol ……
  11. 11. Male Sex Hormone• Testosterone is responsible male sexual characteristics.
  12. 12. Female Sex Hormones
  13. 13. Mode of action oral contraceptives• At beginning of menstrual cycle oestradoil is released.• Egg is released and uterus wall thickens.• Oestradiol production stops  progesterone is produced.• Egg transferred to uterus.• If fertilisation occurs leads to increase in hormone production.• Otherwise mensturation begins because hormone levels fall.• Oral contraceptives have both hormones  no eggs produced.
  14. 14. Steroids• Use – bone marrow stimulation, growth stimulation, stimulate appetite, induction or delay of puberty• Abuse – to give competitive edge, or assist in recovery.• Males ; Liver damage, shrinking of the testes, baldness, breast development, and infertility.• Females ; facial hair growth, menstrual changes, baldness and deepened voice.
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