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Adrenal

Coping with. Adrenal. Location and Function. located above the kidney important for stress situations Medulla releases adrenaline cortex releases: glucocorticoids mineralocorticoids sex hormones. Adrenal Cortex. Malfunction Addisons Disease (hyposectretion) Characterized by:

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Adrenal

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  1. Coping with Adrenal

  2. Location and Function • located above the kidney • important for stress situations • Medulla releases adrenaline • cortex releases: • glucocorticoids • mineralocorticoids • sex hormones.

  3. Adrenal Cortex

  4. Malfunction Addisons Disease (hyposectretion) Characterized by: Weight loss Muscle weakness Fatigue Low blood pressure Glucocorticoids – Cortisol (gluco – think glucose or sugar!) Target • blood Primary Function • Increase level of amino acids in blood to be converted into glucose • Released during periods of stress

  5. Cortisol Control

  6. Mineralocorticoids - Aldosterone Target • Kidney Primary Function • Increase sodium and water reabsorption

  7. Sex Hormones (not stress) • In males • Converted to testosterone • Accounts for pubic hair growth and increased muscle mass • In females • Produces small amount of estrogen

  8. Adrenal Medulla • Unique in that is it stimulated by the nervous system. A neural implus will be given by the hypothalamus to activate the medulla.

  9. Epinephrine (adrenaline) & Norepinephrine (noradrenaline) Target • Many organs Primary Function • Increase • Blood pressure • Heart rate • Breathing • Metabolism • Vessels dialate

  10. Testosterone Progesterone Estrogen The Big 3

  11. Testosterone • Is produced in the testes • Promotes sperm formation and development of male secondary sex characteristics • More in the next chapter.

  12. Progesterone • Producedin the ovaries • Promotes growth of uterine lining and prevents uterine mascle contractions • More in the next chapter

  13. Estrogen • Produced in the ovaries • Stimulate uterine lining growth and development of female secondary sex characteristics • More in the next chapter

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