Parathyroïde Flashcards

1
Q

Localisation

A

Face dorsale de la thyroïde.

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2
Q

Tissu

A

Capsule de tissu conjonctif dense, riche en vaisseaux sanguins, lymphatique, fibres nerveuses + adipocytes

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3
Q

Cellules (2)

A

Principales + Oxyphiles.

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4
Q

Cellules principales

A

Sécrétion de la parathormone. (PTH)

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5
Q

Effets (4)

A

1- Stimule libération calcium de la matrice osseuse -> Sang.
2- Libération Calcitriol par les reins -> Augmente absorption calcium provenant du TGI.
3- Diminution concentration phosphate
4- Augmentation activation vitamine D.

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6
Q

Cellules oxyphiles

A

Rôle inconnu.

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