Thyroid hormone synthesis US Medical PG Flashcards - Medical Study Cards
Master Thyroid hormone synthesis with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Thyroid hormone synthesis Flashcard Deck - 10 Cards
Flashcard 1: Iodide is taken up into the thyroid follicular cell via _____.
Answer: Na+-iodide symporter
Flashcard 2: Overall, the effects of thyroid hormones are _____ (anabolic, catabolic)
Answer: catabolic
Flashcard 3: What effect does excessive I- intake have on thyroid hormone secretion?_____
Answer: Decreases secretion (Wolff-Chaikoff effect)
Flashcard 4: Exposure to cold temperatures causes increased activation of _____ hormone
Answer: thyroid
Flashcard 5: Which thyroid hormone (T4 or T3) binds to nuclear receptor with greater affinity?_____
Answer: T3
Flashcard 6: What thyroid hormone is more potent?_____
Answer: T3 (10 x more potent than T4)
Flashcard 7: What is the effect of the FGF gene?
Answer: stimulates mitosis of underlying mesoderm, lengthening of limbs
Flashcard 8: autonomic nervous system
Answer: neural crest
Flashcard 9: number 10
Answer: intermediate horn sympathetics
Flashcard 10: reticular activating system
Answer: reduced wakefullness and arousability (e.g. coma)
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