the heart
In your body.
It's true its the muscle that moves your eyes :)
heart is the busiest organ :) (lucent's general knowledge )
The busiest muscle is probably the tongue or the jaw muscle because if you eat or talk, you use both. But probably the jaw because there are some sounds you can make without the tongue but both are useful.
whats the slowest muscle in the human body
I would say the heart, as he generally never stops.
The heart is a muscle and in fact the most important
Your mouth. Your tongue is actually the most strongest muscle in the human body.
thinest muscle
the hardest working horse is a appolosa. the hardest working muscle in your body is the heart. it pumps loads of blood through your body every second!
The strongest muscle in the human body is the heart- it never stops working and is essential for life.
The sternocleidomastoid in the human is homologous to the sternomastoid muscle of the cat.