All Sources -
Updated Media sources (1) About encyclopedia.com content Print Topic
myoglobin A globular protein occurring widely in muscle tissue as an oxygen carrier. It comprises a single polypeptide chain and a haem group, which reversibly binds a molecule of oxygen. This is only relinquished at relatively low external oxygen concentrations, e.g. during strenuous exercise when muscle oxygen demand outpaces supply from the blood. Myoglobin thus acts as an emergency oxygen store.
myoglobin A haemoprotein, consisting of a single polypeptide chain surrounding a haem group, that is capable of reversibly binding oxygen. It has a higher affinity for oxygen than has haemoglobin and releases it only when the oxygen supply becomes limiting. Myoglobin is found in the muscles of vertebrates and certain invertebrates, where it serves to store oxygen.
More From encyclopedia.com
Glycogen , glycogen In the 1840s and 50s, Claude Bernard was applying his great scientific mind to the problem of ‘sugars’ in the body, in particular how the li… Muscles , The muscular system is composed of all those body tissues capable of contracting and relaxing and, therefore, of producing movements in its body part… Skeletal Muscle , The skeletal muscles are those tissues that are attached to the bones of the body beneath the skin. As the muscles on examination appear to be constr… Smooth Muscle , smooth muscle The cardiovascular, gastrointestinal, genitourinary, and respiratory systems are composed mostly of hollow organs (tubular or sacular),… Voluntary Muscle , voluntary muscle (skeletal, striped, or striated muscle) Muscle that is under the control of the will and is generally attached to the skeleton. An i… Cramp , cramp Muscle cramps are one of the most common clinical problems suffered by athletes in endurance events. A third to a half of marathon runners and…
You Might Also Like