Quiz: Fisiología Tiroidea

Test your understanding of the specific concepts, facts, and details covered in this PDF document about thyroid physiology

Health mixed 8 Questions
Progress 0 / 8
Q1 Beginner 1 pts

According to the document, what is the main transporter that concentrates iodide (I⁻) in the thyroid follicular cell? Video Reference:
"Transportador NIS (Na⁺/I⁻ symporter), acoplado a Na⁺/K⁺-ATPasa → concentra I⁻ 30–250× frente a sangr..."

Q2 Beginner 1 pts

The document explains that thyroglobulin (TG) is synthesized in the rough endoplasmic reticulum and Golgi, and then secreted into the: Video Reference:
"RER + Golgi producen tiroglobulina (≈ 660 kDa) con ~70 residuos de tirosina; se secreta al coloide (..."

Q3 Intermediate 2 pts

According to the document, what are the two main thyroid hormones produced by coupling reactions within thyroglobulin? Video Reference:
"DIT + DIT → T4 (tiroxina). MIT + DIT → T3 (triyodotironina). Producto final: TG yodada con T3/T4 unid..."

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Q4 Beginner 1 pts

The document states that thyroid hormones in the bloodstream are mostly bound to specific proteins, with the principal one being: Video Reference:
"Proteínas transportadoras: TBG (globulina fijadora de tiroxina) = principal. Transtiretina (TTR) (ant..."

Q5 Intermediate 2 pts

According to the document, what is the main ligand that binds to thyroid hormone receptors in the nucleus to regulate gene expression? Video Reference:
"Resultado: aunque en plasma predomina T4, el ligando que manda en el núcleo es T3 (producida localme..."

Q6 Advanced 3 pts

True or false: According to the document, in the basal state without ligand, thyroid hormone receptors recruit coactivators to enhance transcription. Video Reference:
"Sin ligando (estado basal): TR recluta correpresores (NCoR/SMRT) + HDAC → cromatina cerrada → repres..."

Q7 Intermediate 2 pts

The document gives several examples of thyroid hormone effects on the cardiovascular system. Which of the following is NOT mentioned? Video Reference:
"Cronotropismo/inotropismo: ↑ β1-AR, α-MHC, SERCA → ↑ frecuencia y fuerza. Hemodinámica: ↑ gasto y PA..."

Q8 Advanced 3 pts

According to the document, which of the following hormones or factors can DECREASE TRH (thyrotropin-releasing hormone) secretion from the hypothalamus? Video Reference:
"Frío (RN) y leptina ↑ TRH; estrés, enfermedad aguda, cortisol, dopamina, somatostatina ↓...."

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