Question #58692
1 Answer
Enervation and structure
Explanation:
The heart is made up of cardiac muscles. These muscles are different from skeletal muscles and smooth muscle. These cardiac muscle cells don't lie neatly next to eachother like smooth muscular tissue does.
The cardiac muscle does have the myosin/actin units like the skeletal muscles have.
This means that cardiac muscles combine elements from both smooth and skeletal muscles.
As for the enervation:
Skeletal muscles are directed by the brain (this is why you can move). The smooth muscles are also controlled by nerves (not all from brain and central nervous system).
This stands in contrast with the cardiac muscles: The heart has its own systems to contract and relax again, seperate from the nervous system. These systems are called pacemakers
