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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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Presentation Transcript
location and function
Location and Function
  • located above the kidney
  • important for stress situations
  • Medulla releases adrenaline
  • cortex releases:
    • glucocorticoids
    • mineralocorticoids
    • sex hormones.
glucocorticoids cortisol gluco think glucose or sugar
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
mineralocorticoids aldosterone
Mineralocorticoids - Aldosterone

Target

  • Kidney

Primary Function

  • Increase sodium and water reabsorption
sex hormones not stress
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
adrenal medulla
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.
epinephrine adrenaline norepinephrine noradrenaline
Epinephrine (adrenaline) & Norepinephrine (noradrenaline)

Target

  • Many organs

Primary Function

  • Increase
    • Blood pressure
    • Heart rate
    • Breathing
    • Metabolism
    • Vessels dialate
testosterone progesterone estrogen
Testosterone

Progesterone

Estrogen

The Big 3
testosterone
Testosterone
  • Is produced in the testes
  • Promotes sperm formation and development of male secondary sex characteristics
  • More in the next chapter.
progesterone
Progesterone
  • Producedin the ovaries
  • Promotes growth of uterine lining and prevents uterine mascle contractions
  • More in the next chapter
estrogen
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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