SFOS 73

Card Set Information

Author:
zf2010
ID:
90524
Filename:
SFOS 73
Updated:
2011-06-13 20:29:38
Tags:
Thyroid Parathyroid
Folders:

Description:
SFOS 73
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  1. 1. Osteoblasts
    2. Osteocytes
    3. Osteoclasts
    • 1. Produce bone matrix
    • 2. Trapped osteoblasts
    • 3. Remodel bone
  2. Role of:

    1. Thyroid hormone
    2. Parathyroid hormone
    3. Calcitonin
    • 1. Stimulates bone remodeling
    • 2. Promotes bone breakdown by stimulating osteoclasts, increasing blood calcium
    • 3. Inhibits osteoclasts, decreasing blood calcium
  3. What is the role of thyroid follicle cells?
    • Produce thyroglobulin
    • Break it down to produce T4 and T3
  4. Describe feedback mechanism for thyroid hormone
    Increased thyroid hormone inhibits release of hypothalamic TSH-RH
  5. What is the role of parafollicular cells?
    Produce calcitonin - inhibit osteoclasts
  6. What is a goiter?
    Chronic thyroid enlargement
  7. What are cells of the parathyroid gland and their roles?
    • Cheif cells - secrete PTH
    • Oxyphil cells - unknown
  8. How does PTH maintain calcium levels?
    • Stimulates osteoclasts
    • Increases renal calcium reabsorption
    • Increases calcium absorption in GI via Vitamin D

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