Did you know, Each step while you are walking you use around 200 muscles?
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From the blink of the eye, Munching on those potatoes chips, Having a fight with your sibling(s) to Laughing till your stomach vibrates while watching, "Kapil Sharma Show" in the evening.
Ever wondered, How your muscles come into action and what is its composition?
The following article aims to understand so.
So without any further ado, LET'S GET STARTED!
Muscles are active yet soft tissues which are crucial to producing motion. These tissues convert the chemical energy within into mechanical energy which provides movement in our body.
Interesting, Isn't it?
Muscles in our body can be broken down into 3 groups:
Sources: Socratic.com
Skeletal Muscles are tissue attach to a particular bone via a tendon and can be voluntarily controlled.
Smooth Muscles are tissues found in the blood vessel and internal organs.
Cardiac Muscles as the name suggest, these are tissues found in our heart wall.
The Smooth Muscles and the Cardiac Muscles cannot be voluntarily controlled.
We fundamentally aim to consider only the skeletal muscle in this article for now as we have control over it.
Skeletal muscles are a combination of Muscle Fibres which are the combinations of Myofibrils.
For a decent understanding of this term, let us have a look at the image below.
Source: BioNinja.com
A part of our brain sends an electrical signal to a portion of the muscle which we intend to use. Which stimulates the Myofibrils to contract by rubbing the of the Actin and Myosin against each other.
Rubbing of Actin and Myosin within our Myofibrilis changes the length of the muscle.
This phenomenon is responsible for the movement.
Fun Fact: You always pull the muscle, not push.
While pulling, you get things near you.
Imagine picking up a book from the table. The distance between the two tendons of your biceps gets small.
The Muscle fibres within the Skeletal muscle can be further classified into 2 types of Muscles:
Fast-twitch muscle fibre.
Slow-twitch muscle fibre.
Skeletal muscle is combinations of slow-twitch and fast-twitch muscle fibres.
Fast-twitch muscle fibres can generate a dynamic burst of energy for a short time.
If your skeletal muscles are dominated by Fast-twitch muscle fibres, you are good at activities like Sprinting or Powerlifting.
Slow-twitch muscle fibres instead of generating a dynamic burst of energy, it will provide constant flow energy for a long time.
If your skeletal muscles are dominated by Slow-twitch muscle fibres, you are good at activities like Marathon or Endurance training.
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