hjärtväv
Hjärtväv, also known as cardiac muscle tissue, is a specialized type of muscle found exclusively in the heart. It is responsible for the heart's ability to contract and pump blood throughout the body. Unlike skeletal muscle, which is under voluntary control, or smooth muscle found in internal organs, cardiac muscle is involuntary, meaning its contractions are not consciously directed.
The cells that make up hjärtväv are called cardiomyocytes. These cells are striated, meaning they have a
The contraction of hjärtväv is initiated by electrical impulses that are generated by specialized pacemaker cells
Hjärtväv is highly resistant to fatigue due to its abundant mitochondria and rich blood supply, which provide