MUSCLE PHYSIOLOGY

Detailed explanation-1: -Myoglobin (Mb) is an iron-containing heme protein that is present predominantly in the sarcoplasm of skeletal and cardiac muscles. Due to the presence of heme moiety, myoglobin serves as a carrier and store for oxygen in muscle cells of the body. Myoglobin has more affinity for oxygen as compared to hemoglobin.

Detailed explanation-2: -In its reduced form, Fe(II), myoglobin can either be bound to oxygen (oxymyoglobin) or not (deoxymyoglobin). Additionally, the iron ion can be oxidized to form Fe(III), which is known as metmyoglobin. The binding of oxygen is done noncooperatively since myoglobin is monomeric.

Detailed explanation-3: -Myoglobin is a protein that’s found in your striated muscles, which includes skeletal muscles (the muscles attached to your bones and tendons) and heart muscles. Its main function is to supply oxygen to the cells in your muscles (myocytes). All cells in your body need oxygen in order to function.

Detailed explanation-4: -Myoglobin is found in your heart and skeletal muscles. There it captures oxygen that muscle cells use for energy. When you have a heart attack or severe muscle damage, myoglobin is released into your blood. Myoglobin increases in your blood 2 to 3 hours after the first symptoms of muscle damage.