BIOL 404-Endocrine 5

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kyleannkelsey
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210697
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BIOL 404-Endocrine 5
Updated:
2013-04-06 13:44:30
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BIOL 404 Endocrine
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BIOL 404-Endocrine 5
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  1. 1.What is the pyramid effect
  2. 2.The neurons of the supraoptic nuclei in the hypothalamus synapse where?
    Posterior pituitary
  3. 3.The median eminance is located where?
    between the hypothalamus and the pituitary gland
  4. 4.The pituitary gland sits in what bone?
    Sphenoid
  5. 5.The thin section between the hypothalamus and the pituitary gland is called what?
    Infindibulum
  6. 6.The two portions of the pituitary gland are:
    Anterior and posterior
  7. 7.The notch in the sphenoid bone where the pituitary gland sits is called the:
    sella turcica
  8. 8.The hypothalamo-pituitary portal vessels lead from venous circulation to what point?
    The median eminance
  9. 9.What is the basic system of communication between the hypothalamus and anterior pituitary?
    • ◦Hypothalmic neuron relases hormones into the hypothalamo-pituitary portal vessels
    • ◦The hormone travels to the anterior pituitary where is signals gland cells to release hormones into venous circulation
  10. 10.Another name for the posterior pituitary is:
    Neurohypophyseal
  11. 11.neurohypophyseal hormones are synthesized where?
    Cell bodies of mangocellular neurons
  12. 12.Describe the communication pathway between the hypothalamus and the posterior pituitary
    Paraventricular nucleii (PVN) and Supraoptic nuclaeii (SOM) have axons that extend to the posterior pituitary vis the "Supra-optic hypothalamic tract"
  13. 13.PVN stands for:
    Paraventricular nucleus
  14. 14.SOM stands for:
    Supraoptic nucleus
  15. 15.Hormones produced in the posterior pituitary include:
    • ◦Oxytocin
    • ◦Antidiuretic hormone
  16. 16.Oxytocin causes:
    • ◦milk ejection
    • ◦contraction of myoepithelial cells
    • ◦uterine smooth muscle contraction
  17. 17.Antidiuretic hormone is also known as:
    Vasopressin
  18. 18.roughly what mass of the body is water?
    60%
  19. 19.Antidiuretic is what type of hormone?
    peptide
  20. 20.The higher the plasma osmolarity, the higher concentration of what hormone?
    ADH
  21. 21.Oxytocin is what type of hormone?
    peptide
  22. 22.What is the differnec between oxytocin and ADH?
    • ◦oxytocin has Ile and Leu
    • ◦Antidiuretic has Phe and Arg
  23. 23.ADH and oxytocin have how many amino acids differing between them?
    2
  24. 24.The leucine in oxytocin is what amino acid in ADH?
    Arginine
  25. 25.The arginine in ADH is what amino acid in Oxytocin?
    leucine
  26. 26.Teh Isoleucine in oxytocin is what amino acid in ADH?
    Phenylalanine
  27. 27.Phenylalanine in ADH is what amino acid in Oxytocin?
    Isoleucine
  28. 28.How many types of receptors are there for Oxytocin?
    One
  29. 29.How many types of receptors for ADH are there?
    two
  30. 30.Where are teh receptors for Oxytocin located?
    Uterine and mammary smooth muscle
  31. 31.What are the two types ADH recptors?
    V1 and V2
  32. 32.V1 ADH receptors is found in:
    vascular smooth muscle
  33. 33.V1 stands for:
    Vasopressin receptor 1
  34. 34.V2 is found where?
    kidneys
  35. 35.V2 receptors work by what mechanism?
    adenylate cyclase activation
  36. 36.Which ADH receptor is found in the kidneys?
    V2
  37. 37.Which ADH receptor is found in vascular smooth muscle?
    V1
  38. 38.Which ADH receptor involves adenylate cyclase activation
    V2
  39. 39.The Anterior pituitary is also known as:
    Adenohypophysis
  40. 40.Most anterior ituitary hormones are under th dual control of:
    • ◦Hypothalmic releasign hormones
    • ◦Hypothalmic inhibitory factors

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