Produire le mouvement (1) - Les muscles Flashcards

1
Q

tissu conjonctif

A

tissu permettant de tenir ensemble

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2
Q

muscles antagonistes

A

muscles faisant 2 actions opposées (muscle fléchisseur et muscle extenseur)

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3
Q

sarcolemme

A

membrane plasmique qui entoure la cellule + lame basale

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4
Q

réticulum sarcoplasmic

A

contient Ca2+

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5
Q

myofibrille

A

-filament épais: filament de myosine
-filament fin: filament d’actine

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6
Q

sarcomère

A

unité de structure et de fonctionnement

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7
Q

taille fibre musculaire

A

10 micromètre

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8
Q

contraction

A

plus court (rapprochement de l’actine) grâce au cytosquelette

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9
Q

Rigidité cadavérique

A

après mort: sans ATP, les têtes de myosines restent fixées à l’actine (bloqué étape 3)

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