https://padlet.com/sarahf869/p59t29i5ceoy en-us 2017-09-29 19:01:06 UTC 2025-08-04 11:38:45 UTC hello@padlet.com sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192591492 An action potential in a motor neuron causes acetylcholine to release in the synaptic cleft.]]> 2017-09-29 19:04:02 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192591492 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592034 Calcium is released from the terminal cisternal into the muscle fiber and binds to troponin.]]> 2017-09-29 19:05:44 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592034 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592444 Troponin shifts tropomyosin, which was blocking the active site on the actin.]]> 2017-09-29 19:07:15 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592444 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592691 Myosin heads attach to actin by breaking down ATP]]> 2017-09-29 19:08:00 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592691 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592918 The Myosin head forms a ‘cross-bridge’ on the active site of the actin filament.]]> 2017-09-29 19:08:46 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192592918 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192593137 The cross bridge pulls actin, which slides over the myosin – known as the ‘Power Stroke.’]]> 2017-09-29 19:09:31 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192593137 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192593343 The release of ADP completes the cross-bridge movement and ATP attaches to myosin, breaking the actin-myosin crossbridge.

]]> 2017-09-29 19:10:10 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192593343 sarahf869 https://padlet.com/sarahf869/p59t29i5ceoy/wish/192594198 During each contraction the sarcomeres (basic unit of muscle) shortens, bringing the Z-Disks closer together.]]> 2017-09-29 19:13:13 UTC https://padlet.com/sarahf869/p59t29i5ceoy/wish/192594198