How a Muscle Contracts | Muscle Physiology 101

Here’s how a Muscle Contraction works:

1️⃣ Neural signal becomes strong enough to send an action potential
2️⃣ Action potential crosses the Neuromuscular junction and causes a release of calcium ions
3️⃣ Calcium binds to troponin
4️⃣ Troponin moves the tropomyosin to explode the binding sites
5️⃣ Myosin binds to actin
6️⃣ ATP can create a muscle contraction (shortening) by “resetting” the myosin heads to an active position

💪 Graphics from @muscleandmotion

[piercebaker]

Very concise, short and sweet. Thank you!

[abhilashapatel]

Thankyou sir very easy to understand and again' 💗✨

[wolfpackak]

Man!!! We walk around in the coolest shit don’t we? Bodies are amazing.

[Sergiuss]

The most important part of how the shortening works is missing

[rallan]

That's the working theory. Partially.

[christianrios]

I don’t wanna hear anything about muscles from you😭