'Adp adp atp thick' presentation slideshows

Muscle Contraction

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Lecture 9b.

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Role of Ionic Calcium (Ca 2+ ) in the Contraction Mechanism

Role of Ionic Calcium (Ca 2+ ) in the Contraction Mechanism. At __________ intracellular Ca 2+ concentration: Tropomyosin ________________the binding sites on actin Myosin cross bridges cannot attach to binding sites on actin Muscle remains _. Figure 9.11a.

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Myofilaments: Banding Pattern

Myofilaments: Banding Pattern. Thick filaments are composed of the _ extend the entire length of an A band extend across the I band and partway into the A band Z-disc coin-shaped sheet of proteins ( connectins ) that anchors the thin filaments and connects myofibrils to one another.

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