Muscle Contraction by Jalen Brooks https://padlet.com/jalbro918/pkn6izlk147b Flow Chart of the 3 major events of muscle contractions en-us 2019-03-08 15:02:41 UTC 2025-06-29 22:51:34 UTC hello@padlet.com Event 1 jalbro918 https://padlet.com/jalbro918/pkn6izlk147b/wish/339330810  The brain sends a nerve impulse through the motor unit to a Neuromuscular Junction.
Nerve impulse causes voltage gated calcium ion channels to open which allow calcium ions to enter the neuron.  This increase in Calcium stimulates the release of the neurotransmitter, acetylcholine, which is released into the cleft. ACh binds to a ACh receptor sight and activates voltage gated sodium channel  which pumps Na+ in and K+ out. More Na+ is pumped into the muscle cell than K+ is pumped out causing the cell interior to become less negative or depolarized.


]]> 2019-03-08 15:08:18 UTC https://padlet.com/jalbro918/pkn6izlk147b/wish/339330810 Event 2: EC Coupling jalbro918 https://padlet.com/jalbro918/pkn6izlk147b/wish/339331068 Step 1:  Detailed description  

 

]]> 2019-03-08 15:08:40 UTC https://padlet.com/jalbro918/pkn6izlk147b/wish/339331068 Event 2: EC Coupling jalbro918 https://padlet.com/jalbro918/pkn6izlk147b/wish/339331132 Step 2: detailed description  ]]> 2019-03-08 15:08:46 UTC https://padlet.com/jalbro918/pkn6izlk147b/wish/339331132 Event 2: EC Coupling jalbro918 https://padlet.com/jalbro918/pkn6izlk147b/wish/339331221 Step 3 and 4: detailed description 

]]> 2019-03-08 15:08:58 UTC https://padlet.com/jalbro918/pkn6izlk147b/wish/339331221 Event 3: Cross bridge coupling jalbro918 https://padlet.com/jalbro918/pkn6izlk147b/wish/339331353 step 1: detailed description 

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