Anatomy
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- Hi Kendra how are you today?
- I’m good james, I learnt something fascinating in my anatomy class today.
- Really? Tell me about it.
- Sure!! It has to do with how the muscles contract and surprisingly james we never think about these tiny details when moving.
- Muscles are like pulling ropes that help us move, they are made up of tiny parts that work together
- Really? How does it work?
- When we want to move, our brain sends signals to our muscles letting it know it’s time to work
- Fascinating, and after that what happens?
- The message reaches a meeting point between the nerve and the muscle, this point is called the neuromuscular junction
- Here the nerve has to use a special messenger called the neurotransmitter
- It’s like a key that opens a door for message to pass through
- There are tiny gates and doors on the muscles. They open when the messenger (neurotransmitter ) arrives.
- The voltage channels are like doors that open because of the message’s electricity.
- There are also chemical gated channels that are like gates that only open when they sense the messenger’s key
- Wow amazing
- There are also tiny messengers callled calcium and ATP inside our muscles that play a very important role inside our muscles.
- Haha yes, I guess you can call them that.
- So they’re like tiny minions.
- Our muscle also has two special team inside them and they are actin and myosin. They work together like a tug of war game. Actin pulls one way and myosin pulls the other way, making the muscle move.
- The tiny messangers( calcium and ATP) tell the special time when to start pulling once the message comes from the brain.
- Wow so much teamwork just for the muscle to move, and we don’t think too deep on how it works.
- Exactly james, don’t you think that muscle movement is amazing
- Yes I do Kendra. Thank you for sharing.
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