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26 Cards in this Set
- Front
- Back
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The thyroid is a ____ gland that maintains normal body metabolism, gowth and developement, storage and secretion of hormones
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endocrine
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Production of thyroid hormones is through --------
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iodine metabolism
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What are the thyroid hormones
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Triiodothyronin(t3)
Thyroxins (t4) calcitonin |
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The hormones are stored in the ______ of the gland
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colloid
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_____ releases hormones when needed, and is produced by the pituitary gland
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TSH
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The secretion of TSH is regulated by throtophin releasing factor which is produced by the _____
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hypothalamus
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______ controls the level of thyrotropin releaseing factor
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basal metabolic rate
(a decrease of BMR causes inc of thyrotropin releasing factor) |
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The primary hormone of the thyroid is ______
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Thyroxine (90%)
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______ decreases blood calcium levels preventing hypercalcemia. It works opposite the parathormone
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calcitonin
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The thyroid lies below the _____
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larynx
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_____ is medial to the thyroid
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trachea
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______ is anterolateral to the thyroid
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Sternocleidomastoid and strap muscles
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what are the strap muscles
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sternohyoid, sternothyroid, and omohyoid
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______ is posterior to the thyroid
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Longus colli and esophagus
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______ consists of the thyroid artery and laryngeal nerve and is posterior to the thyroid
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Minor Neurovascular bundle
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The thyroid is larger in _______
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women
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The thyroid is surrounded by a true and false capsule but the _____ is adherent to the gland
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true
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What are the thyroid dimensions
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4-6cm L
2-3 cm AP 2 W |
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The ______ artery is the largest branch of the thyrocervical trunk of the sub artery
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Inferior thyroid artery
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The esophagus in trans is seen slightly _____ of midline
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left
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______ are attached to the posterior surfaces of the lateral lobes of the thyroid. There are 4 of them and 2 pairs. They lie behind the middle third and lower third of the thyroid
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parathyroid glands
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What are the parathyroid dimensions
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5-7mm L
3-4 mm W |
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_____ are low serum clacium levels. Can be asymptomatic to life threatening.
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Hypocalcemia
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_______ are high serum calcium levels usuall seen with hyperparathyroidism or enlargement of one parathyroid
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Hypercalcemia
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When serum calcium levels are low _____ is secreted
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PTH
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The thyroid comes from _____ during developement
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thyroglossal ducts
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