Neurohypophyse Flashcards

1
Q

Localisation

A

Hypophyse postérieure.

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2
Q

Autre nom

A

Appareil hypothalamo-hypophysaire.

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3
Q

Libération de

A

Neuro-hormones dans la vascularisation.

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4
Q

Emmagasinage

A

Vésicules de sécrétion dans les terminaisons axonales de la neurohypophyse.

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5
Q

Stimulus

A

Acétylcholine.

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6
Q

Irrigation sanguine

A

Artère hypophysaire inférieure qui se jette dans le plexus de la neurohypophyse. Puis, ils vont dans les veines hypophysaires postérieures.

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7
Q

ADH

Noyau de sécrétion

A

Noyau supra-optique hypothalamus

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8
Q

ADH

Effet (2)

A

Réabsorption eau + Vasoconstriction.

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9
Q

ADH

Stimulé par…

A

Hypovolémie, hypotension, douleur, stress, trauma, acétylcholine, nicotine, morphine, anesthésique.

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10
Q

ADH

Inhibé par (2)

A

Alcool, hydratation adéquate.

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11
Q

Ocytocine

Noyau de sécrétion

A

Noyau para-ventriculaire hypothalamus

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12
Q

Ocytocine

Effets (2)

A

Stimule la contraction des muscles lisses de l’utérus lors de l’accouchement.
Éjection du lait

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13
Q

Ocytocine

Rétroactivation par (2)

A

Dilatation de l’utérus, succion du lait.

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14
Q
Ocytocine
Inhibition par (1)
A

Absence de stimulus nerveux.

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