Breakdown of ATP and Cross Bridge Movement during Muscle Contraction [HD Animation]

Breakdown of ATP and Cross Bridge Movement during Muscle Contraction [HD Animation]


During Contraction of a Muscle Calcium Ions bind to Troponin This Moves Tropomyosin out of the Way and Uncovers Binding sites for Myosin on the Actin Maia Filaments AdP and Phosphate Are Attached to the Myosin Head from the Previous Cycle of Movement The Myosin Heads [Attach] to the Exposed Binding sites on the Actin [Maya] Filaments to Form Cross Bridges and the Phosphate is Released Energy Stored in The Head of the Myosin [Maya] Filament Is used to move the head This Causes The Actin [Maya] Filament to Slide Past the Myosin Maya Filament The AdP is Released From the Myosin head as it Moves The Bond Between Actin and the Myosin Head Is broken When an Atp Molecule binds to the Myosin head The Atp Is broken Down to [Adp] and Phosphate Releasing Energy Which Is stored in The Myosin Head and will be used Later [for] movement the Head of the Myosin Molecule Returns to its upright Position and is Ready to bind to Actin again if Calcium Ions Are Still present the entire Sequence is Repeated you

11 Replies to “Breakdown of ATP and Cross Bridge Movement during Muscle Contraction [HD Animation]”

  1. Fantastic video. Really helped me to understand this concept and study for my exam. Better than alot of other videos. Thank you

  2. Omg. I have been studying this concept for 48hrs..im in first year med school. I have come to understand the concept thanks to this video..brilliant.

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