[سارة الحربي]

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آبي احد يفهمني هذه ^_^ ..
[ فـ الآسئلة المقلوبه ]

How do mitochondria, smooth ER, and the cytoskeleton all contribute to the contraction of muscle cell?
(Answer page: 69)
Mitochondria supply energy in the form of ATP. The smooth ER helps regulate contraction by the uptake and release of calcium. Microfilaments function as the actual contractile apparatus.



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4.21- A muscle tear injury would probably involve the rupture of which type of cell junction?
(Answer page: 68)
anchoring junction


وهنا ليش هالنوع [ مافهمت السؤال ] .. :(