מיקרופילמנט
הערות שוליים

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| חלקי התא ואברוניו |
| --- | --- | --- |
| אברונים | גרעין התא • רשתית תוך-פלזמית • גולג'י • כלורופלסט • מיטוכונדריון • ליזוזום •  פרוקסיזום • בועית מתכווצת |  |
| חלקים נוספים | ציטופלזמה • קרום התא • דופן התא • שלד התא • חלולית • ריבוזום • MTOC (צנטריול) • מזוזום |  |
| מבנים בגרעין | גרעינון • ספלייסוזום |  |
ייצוג פני שטח של המבנה האטומי של סיב האקטין המכיל 13 יחידות אקטין.
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השותפים בתהליך כיווץ השריר. מיוזין, אקטין, טרופומיוזין, טרופונין ויוני סידן.