no it's not
abdominal-wall muscles and the internal intercostal muscles contract.
The heart IS a muscle. If you're talking about skeletal muscles, then they are not all at the top of your heart (because what about your abdominal muscles, thigh muscles, calf muscles, etc?)
These muscles are called "skeletal muscles".
The same muscles that allow you to smile. Your jaw muscles of course!
Skeletal muscles .
skeletal muscles or voluntary muscles
Skeletal Muscles
Muscles that move bones are called Smooth muscle cells or Skeletal muscles
Skeletal muscles.
All skeletal muscles are attached to bones. This is why they are called skeletal muscles.
Both skeletal and cardiac muscles are striated muscles.
The body has more skeletal muscles.