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15 Cards in this Set
- Front
- Back
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types of endocrine glands
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Exocrine - secretes into a duct
Endocrine - excretes into blood stream |
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Negative feedback system
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regulates endocrine system by increasing or decreasing secretion of a hormone.
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Thyroid - major function
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The production, storage and release of thyroid hormones.
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Thyroid hormones -
purpose of T3 and T4 |
regulate body metabolism
regulate energy production regulate f/e production controls tissue use of fats, proteins and carbs |
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thyroid hormone -
purpose of calcitonin |
inhibit mobilization of Ca+ from bone
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Thyroid hormones are regulated by
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anterior pituitary gland
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Parathyroid glands - where and what
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located behind lobes of thyroid. Produce parathormone (PTH)
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PTH
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secreted by parathyroid, regulated by feedback system, regulates serum calcium levels
*acts on bone *acts on kidneys *acts on GI |
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Hyperthyroidism
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sustained increase in release of T3/T4 or both
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Graves Disease
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most common form of hyperthyroidism
-autoimmune disease -may be cause by precipitating factors -antibodies bind to gland causing overgrowth and overproduction |
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S/S of hyperthyroidism
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heat intolerance,fine straight hair, bulging eyes, flushed face, enlarged thyroid, tachycardia, increased b/p, weight loss, muscle wasting, localized edema, tremors, clubbing, diarrhea, menstral changes
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toxic nodular goiters -
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caused by thyroid hormone excreting nodules independent of TSH. If assoc. with hyperthyroidism are called toxic
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diagnosis of hyperthyroidism
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decreased TSH
high Free T4 levels radioactive iodine uptake RAIU -more uptake with Graves then with nodules |
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hyperthyroidism treatment
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Drugs- PTU, blocks conversion of T3 & T4
Iodine - SSKI and Lugols sol. decrease blood flow b-andrenergic blockers - inderal, decreases tachycardia, diaphoresis and palpitations |
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nonpharm tx of hyperthyroidism
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-radioactive iodine therapy to fry thyroid
-surgery |
