Biologie cellulaire muscles squelettiques Flashcards

1
Q

Quels sont les 3 types de cellules musculaires ?

A

Muscle striés squelettiques
Muscle striés cardiaque
Muscle lisse

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2
Q

Composition globale du Muscle squelettiques

A

Striés, allongé, cylindrique
Contraction volontaire , dans un faisceau

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3
Q

Composition globale du muscle cardiaque

A

Strié ramifié

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4
Q

Composition globale du muscle lisse

A

Fusiforme contraction involontaire, pas strié

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5
Q

Composition d’une cellule musculaire

A

Sarcolemme
Myofilament
Mitochondries
RS

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6
Q

Mécanismes général de la contraction

A

Dépolarisation d’un motoneurone (excite)
- Potentiel d’action nerveux
- Libération d’Acétylcholine
- Dépolarisation de la M. Sarcolemmique
- Génération d’un Potentiel d’action musculaire
- Contraction

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7
Q
A
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