Endocrine

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Author:
edeleon
ID:
302761
Filename:
Endocrine
Updated:
2015-05-15 00:29:01
Tags:
physio endocrine
Folders:
physio exam 4
Description:
lecture notes
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  1. T or F: a hormone is a chemical messenger that is released into the bloodstream throughout the body
    true
  2. What are the 3 types of hormones? Which ones are hydrophilic and hydrophobic?
    • Peptide: chain of amino acids (hydrophilic)
    • amino acid based (hydrophilic)
    • Steroids: based on cholesterol (hydrophobic)
  3. What 3 things trigger the release of hormones?
    • 1. Tropic hormones: hormones triggering other hormones
    • 2. Environmental stimuli: strething of things, levels of glucose, calcium, etc.
    • 3. Nervous system
  4. What are the 4 main glands?
    • 1. Pituitary¬†
    • 2. Thyroid
    • 3. Pancreas
    • 4. Adrenal
  5. Which part of the brain is the pituitary attached to?
    Hypothalamus
  6. T or F: the neurons from the hypothalamus extend into the anterior part of the pituitary which release hormones.
    False: posterior part
  7. The hypothalamus releases hormones into the posterior part of the pituitary. What are these 2 hormones?
    • Oxytocin: stimulates contractions in labor, leading to more oxytocin, also for lactation of milk, and social bonding between sexes
    • ADH: increase BP
  8. What releasing hormone does the hypothalamus send into the anterior part of the pituitary? what does it do?
    GnHR:  controls the pituitary release
  9. What tropic hormone stimulates the pituitary gland to release its hormones?
    Thyroid stimulating hormones (TSH)
  10. What tropic hormone stimulates the adrenal cortex?
    adrenocorticotropic hormone (ACTH)
  11. What are the two gonadotropis hormones?
    • Luteinizing hormones (LH)
    • Follicle Stimulating Hormones (FSH)
  12. What does LH do for men and for women?
    • Men: triggers release of testosterone
    • Women: Triggers ovulation for women and formation of corpus luteam
  13. What cells make progesterone?
    Corpus luteum
  14. What does FSH do for men and for women?
    • Men: stimulates sperm production
    • Women: stimulates development of follicle (egg + associated structures), in the ovary (makes estrogen)
  15. How are LH and FSH initiated?
    The hypothalamus release GnRH into the pituitary gland, which then release LH & FSH
  16. What does prolactin do?
    promotes lactation
  17. Where is the thyroid located?
    on top of the trachea
  18. What do T3 and T4 hormones need for production?
    Iodine
  19. What is goiter?
    Occurs in the pituitary gland when it enlarges from not enough iodine
  20. T o F: thyroid gland regulates metabolism
    true
  21. What is the function of calcitonin and what gland secretes it?
    Thyroid: stores away calcium
  22. What are the 2 functions of the parathyroid glands?
    • 1. releases hormones if Ca++ levels are low
    • 2. Tells body to dissolve some bone to increase available Ca++
  23. What is the exocrine function of the pancreas?
    making digestive enzymes and HCO3-
  24. What are the endocrine functions of the pancreas?
    • 1. makes insulin: tells cells glucose are available and to take in
    • 2. Makes glucagon: when sugar levels are dropping, it tells body to release stored glucose
  25. What is another name for the adrenal gland and its location?
    Suprarenal gland: on top of the kidney
  26. In the adrenal gland, what hormone does the adrenal medulla release?
    Epinephrine
  27. In the adrenal cortex, there are 3 parts (outer, middle, inner) what hormone does the outer and inner parts release?
    • Both release steroid hormones
    • Outer: mineralocorticoids, primarily aldosterone
    • Inner: sex hormones
  28. What hormone does the middle part of the adrenal cortex release? what does it do?
    • Glucocorticoids: primarily Cortisol
    • Also called stress hormones, it shifts the balance of how body focuses its energy to deal with stressful situations

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