Results and stats for "Thyroid physiology 2"
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Average score: 20.7
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Related quizzes
Most correctly guessed answers
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Which element is taken up by the thyroid to make T3 and T4?
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Iodine
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100.0%
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Which amino acid is used in the thyroid in addition to iodine to make T3 and T4?
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Tyrosine
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100.0%
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The thyroglobulin which accumulates in thyroid epithelial cells is called [...].
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colloid
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100.0%
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Which element do thyroid follicular cells take up?
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Iodide
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100.0%
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In thyroid follicular cells, iodide is oxidized to [...].
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iodine
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100.0%
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In thyroid follicular cells, iodine covalently attaches to the [...] amino acids of the [...] protein.
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tyrosine, thyroglobulin
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100.0%
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When the thyroid is stimulated by TSH, what do follicular cells do to iodinated thyroglobulin?
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Endocytose them and break them down in lysosomes
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100.0%
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Where in the thyroid is iodinated thyroglobulin stored?
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Lumen of follicles
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100.0%
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Lysosomal degradation of iodinated thyroglobulin in thyroid follicular cells results in the release of the [...] and [...] hormones.
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T3, T4
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100.0%
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In thyroid follicular cells, the addition of iodine to thyroglobulin yields which 2 iodinated forms of tyrosine?
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Monoiodotyrosine
Di-iodotyrosine
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100.0%
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Which 2 forms of iodinated tyrosine are added to form T3?
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MIT + DIT
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100.0%
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Once they have entered cells in the periphery, where do thyroid hormones bind?
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Nuclear receptor
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100.0%
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How do T3 and T4 enter the cell?
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Diffusion
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100.0%
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Where in the cell is the T3 and T4 receptor?
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Cytoplasm
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100.0%
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How are thyroid epithelial cells organized?
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Follicles
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66.7%
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Thyroid epithelial cells secrete [...].
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thyroglobulin
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66.7%
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In thyroid follicular cells, iodide is [...]ed to iodine.
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oxidiz
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66.7%
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C/parafollicular cells of the thyroid secrete [...].
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calcitonin
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66.7%
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The colloid in the thyroid represents a store of thyroid hormone which can last how long?
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Weeks
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66.7%
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Which enzyme oxidizes iodide into iodine in the thyroid?
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Thyroid peroxidase
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66.7%
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What are the 3 plasma thyroid hormone-binding proteins?
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Thyroxine binding globulin
Thyroxine binding pre-albumin
Albumin
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66.7%
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Where does thyroid hormone-receptor complex bind on DNA?
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Thyroid hormone responsive element
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66.7%
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What effect do high levels of iodine have on thyroid hormone synthesis?
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Inhibition
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66.7%
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How do high levels of iodine inhibit thyroid hormone synthesis?
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Inhibition of the iodide pump
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66.7%
