GENERAL HISTOLOGY

Detailed explanation-1: -Cardiac muscle, like skeletal muscle, is comprised of sarcomeres, the basic, contractile units of muscle. Cardiac muscle (as well as skeletal muscle) also contain the protein myoglobin, which stores oxygen. Cardiac muscle is adapted to be highly resistant to fatigue.

Detailed explanation-2: -Cardiac muscle resists fatigue so well because it’s got more mitochondria than skeletal muscle. With so many power plants at its disposal, the heart doesn’t need to stop and chill out. It also has a steady supply of blood bringing it oxygen and nutrients.

Detailed explanation-3: -Cardiac muscle tissue is one of the three types of muscle tissue in your body. The other two types are skeletal muscle tissue and smooth muscle tissue. Cardiac muscle tissue is only found in your heart, where it performs coordinated contractions that allow your heart to pump blood through your circulatory system.