What are muscles made of?
They are made of fibres that stretch and pull .
Is the heart a cardiac muscle?
Yes! and it is an involuntary muscle.
What are voluntary muscles?
Muscles that you can control.
What parts of the body is strenghtened when we do physical activity?
Muscles ;)
How many types of muscles are there?
3 types: cardiac muscle,skeletal muscle and smooth muscles.
What is the muscular system?
It's a set of organs that allow us to move.