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24 Cards in this Set
- Front
- Back
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Secretes calcitonin
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C-cells
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Enzyme involved in the formation of T3 and T4
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peroxidase enzyme
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Thyroxine
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T4
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Triodothyronine
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T3
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90% of thyroid hormone is secreted as
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T4
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Active form of thyroid hormone
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T3
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Target tissues of the thyroid hormones do not include
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spleen
retina lung testes |
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Releases thyroid releasing factor
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hypothalamus
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Releases thyroid stimulating hormone
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anterior pituitary
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What are the 2 things that thyroid hormones decrease
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LDL levels
body weight |
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What enlarges the thyroid gland in a goiter
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thyroid-stimulating antibodies
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Result of an endemic goiter
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hypothyroidism
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Result of exophtalmic goiter
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hyperthyroidism
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Three causes of endemic goiter
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diet
virus goiterogens |
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Tests blood for T3/T4 levels
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radioimmunoassay
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Test for thyroid abnormalities
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protein bound iodine
radioimmunoassay |
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Where is the parathyroid gland
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posterior thyroid gland
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Where are the C-cells found
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thyroid gland
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What is the chief function of PTH and calcitonin
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maintain ionized Ca at 10 mg%, 5 mEq/L, 2.5 mmol/L
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Where does iononized Ca feedback
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directly on the parathyroid gland
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What happens when Ca levels are low (3)
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parathyroid hormones stimulate osteoclasts, Ca reabsorption in the kidney and g.i.
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What happens when Ca levels are high
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calcitonin inhibits osteoclasts
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Must be present in order for the kidney to reabsorb Ca+2
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Vitamin D
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Carpopedal tetany may indicate
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Hypoparathyroidism
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